Get rid of those constant one-shot encounters. Elites and Bosses untouched.

Donators/Buyers bonus!

Exponential Leveling is an addon that changes the amount of points (stats, class, ..) and optionally resources (hp/stamina/mana/regen..) you gain upon EACH level up.
It is meant to make Madness difficulty possible without cheating or hacking of any kind. The game isn't really meant to be beaten on Madness-Roguelike in a legit way, which is why trainers/cheats/savescams exist. There have been only a couple of winners that might be real and legit, and they are Adventure class with no video proof.

Being fully configurable, it can also be used to make the game easier as you wish to.

THIS DOES NOT DISABLE IN-GAME AND STEAM ACHIEVEMENTS.

How to use this addon:

    - Download and install, of course. Check if the addon is ACTIVATED. If you have another addon that superload/overload player.lua, it might conflict.
    - Start a New Game.
    - Under Options > Gameplay, you can enable or disable the addon. This will work from the next levelup. It cannot be used retroactively.
    - You can also change mode of operating (Default is balanced) and optional modes of operation (Also increase resources, life, etc on levelup) or be left as is.
    

Operating Modes:

    - Balanced -> Gives extra points in a fair way depending on your difficulty (Nightmare, Insane and Madness)
    - Extra Points -> Gives many more points than vanilla in any difficulty
    - Cheatish -> Gives way more points than you'll ever need
    - Only Life -> Does NOT change how many points you gain on levelup, but provide some extra MAX HP on levelup. How much per level can be configured under the options.
    

Optional Modes (These work alongside Operating Modes):

    - None -> Nothing else than what chosen under Operating Modes
    - All Resources -> Increase stamina, mana, hate, vim, etc (MAX and regen) upon levelup. How much per level can be configured under the options.
    - MAX HP -> Increase only MAX HP and not all resources upon levelup. How much per level can be configured under the options. Stacks with Only Life if you want to.
    

POINTS COMPARISON (Example: Cornac Rogue at lv50):

        STATS    |    TALENTS    |    GENERIC    |    CATEGORY    |    PRODIGIES    |    MAX HP    |    STAMINA                    

VANILLA | 160 | 70 | 49 | 4 | 2 | 958 | 247
BALANCED NIGHTMARE | 181 | 127 | 101 | 9 | 5 | 958 | 247
BALANCED INSANE | 217 | 145 | 119 | 12 | 8 | 958 | 247
BALANCED MADNESS | 269 | 166 | 140 | 20 | 17 | 958 | 247
EXTRA POINTS | 212 | 171 | 150 | 14 | 17 | 958 | 247
CHEATISH | 1140 | 560 | 539 | 102 | 202 | 958 | 247
ONLY LIFE | 160 | 70 | 49 | 4 | 2 | 1252+ | 247

+ ALL RESOURCES | - | - | - | - | - | 1252+ | 396+

All resources ALSO gives, by a small amount, resources regeneration like: mana, stamina, vim, positive/negative, hate (per kill, not passively generated), psi and reduces equilibrium (by a small amount) every turn even in combat.

---

Update v4.0.3

• Fixed the partial points (0.5 or negative -0) display bug in the character sheet and levelup screen. Overall points are the same as before.

Update v4.0.2

• Fixed equilibrium regen bug (now it correctly reduces your equilibrium per turn by a small amount and stacks with other effects)

Update v4.0

• Compatible with TOME 1.7.4
• Options are much easier to understand and more customizable
• Balanced mode (Default) is now meant to make Madness ACHIEVABLE without cheating; it's still hard as hell.

Experience Controller is an addon that lets you change the amount of experience you receive upon killing foes.

You can enable/disable it realtime and it will work from the next kill onward. It also works for arena and infinite dungeon alike.

THIS DOES NOT DISABLE IN-GAME AND STEAM ACHIEVEMENTS.

 

How to enable/disable or configure this addon:

• Download, install and activate it. Start a New Game.
• You can enable/disable or change mode, set the amount of flat experience or multiplier to apply to each future kill from the "Gameplay" settings in-game.

 

Modes functionality:

• VANILLA -> Doesn't change anything compared to original game.
• BALANCED (default) -> Gives on general more experience to the player on higher difficulties than original game, depending also on the rank and level of the defeated enemy.
• VERY FAST -> Gives 250% flat experience compared to original TOME.
• FLAT -> Each kill gives X experience points, regardless of what you kill or what level you/they are. How much per kill can be configured in the Gameplay settings.
• CUSTOM -> Multiplies by X all the experience you gain from kills. You can set your own multiplier in the Gameplay settings.
• INSTANT LV50 -> One kill for LV50. A cheat way to test out new builds REALLY fast.

 

---

 

Update v4.0.1

* Fixed a few typos and minor logging issues

 

Update v4.0

* Compatible with TOME v1.7.4

* Added multiple customization possibilities in-game and reworked functionality of all the addon

Places the Lost Merchant event on the map as a zone entrance rather than an undetectable encounter.  A companion piece to Melinda on the Map; they can be used together or separately.

In general, this mod is for people (like me) who like to do everything in a game. Visit all the dungeons, kill all the bosses, preferably get all the artifacts. By allowing all characters to visit some more restricted dungeons, we can make that a little easier. This mod is not intended to be lore-friendly, but I may make a lore-friendlier version in the future. (As it stands you can visit Irkkk as a halfling and the Yeek don't care. I may change that.)

Current mod features:
All characters can visit the Iron Throne, its shops, and its two attendant dungeons.
All characters can travel through the tunnel in the Ancient Halfling Complex to reach the Island of Rel. There they can visit Irkkk and the two dungeons.
All characters will receive caldera at level 20, and sludgenest at level 30.
The maximum level of Rel's dungeons is raised to match Halfling Complex (to 25)
The maximum material level of Rel's dungeons is raised by 1 (from 2 to 3)

Adds additional fire and darkness trees for defiler classes, and the emblazoned class, who uses a mixture of them and Uhr'rok talents.

Adds the Deathknight class. See forum thread for details.

Adds several new gem types and attempts to fill in some gaps in Tiered gem colors; also adds the Crystal race.

This is a continuation of jayseesee's original addon. It's my hope that the gems in this release are balanced, consistent across tiers, and useful to a variety of different characters.

Also hopefully all the Crystal's balance issues have been worked out: it should be an interesting tactical challenge to make best use of its unique mobility, find the right time to exploit its Runic Saturation status clear Stasis talent, and optimal self-imbued gemstone for each dungeon.

As always, please let me know if you find any issues in terms of bugs, game mechanics, or interface!

Places the Sect of Kryl-Feijan event on the map as a zone entrance rather than an undetectable encounter.

Prodigies have minimal requirements and you can get one at level 1.

Adds an option to the Online tab that can disable the broadcasting of death messages. Additionally, can suppress death messages for characters under a specific level.

One year has passed since the one the Orcs call the "Scourge from the West" came and single-handedly crushed the Orc Prides of Grushnak, Vor, Gorbat, and Rak'Shor.  The Allied Kingdoms, now linked by farportal to their distant, long-lost Sunwall allies, have helped them conquer most of Var'Eyal.  The few remnants of the ravaged Prides are caged...  but one Pride remains.  Kruk Pride, isolated on an island, is the last orcish settlement that stands; they, too, face their impending doom.  The Sunwall has blockaded the only exit point from the island, and now, the technologically advanced civilization of Steam Giants have come down from the mountains to take their homeland with machines and weaponry unlike anything else on Eyal.  Kruk Pride has reverse-engineered their technology before; their only hope is to do it again and rise up against the Pride's foes.
 

Features:

• Explore a whole new campaign from level 1 to 50, one year after the events of the original Tales of Maj'Eyal campaign. Liberate the Orcs (or die trying) by rising up against the Sunwall, the Steam Giants of Atmos, and other dangers that may lie in wait...
• Play as one of three new races: the battle-hardened Orcs, the brutal Yetis, and the unstoppable Whitehooves. Discover their stories, their pains, their hopes... and their awesome racial powers!
• Risk your life in over 20 unique zones! Explore the ruins of a lost city, lay siege to the Sunwall forces at the Gates of Morning, and raid the Steam Giants' mining quarry - each has its own unique foes and hazards, leading each to feel and play different from the others.
• Play as one of the four new tinker classes: Gunslingers, Sawbutchers, Psyshots and Annihilators! Plus a class evolution: Technomancers! Crush and rend your foes with heavy metal, electrocute and immolate them with your gadgets, charge across the battlefield or nimbly strafe in style - each plays differently, and none provide any shortage of ways to slay your foes.
• Master steam technology to build powerful tinkers to augment your equipment. Need to close in a bit quicker? Turn your boots into rocket boots! Having a hard time deciding whether to shoot someone or stab them? Build a Hand Cannon into your gloves, or deploy a Weapon Automaton to do the stabbing for you! If you have a problem, steamtech has a solution, usually involving explosions; with over 80 different powerful contraptions to craft, enjoy unparalleled versatility and trying something different with every playthrough.
• Master the tactical uses of over 140 talents! Fire bouncing trick-shots and psychic-infused shots, use your steamsaws as shields or wheels, terrify your foes with long mechanical arms - there are no "boring" talents here, everything has its own special applications and properties!
• Use advanced technology in the world of Eyal! Burrow through sand, plant bombs to destroy tunnels, and discover that you aren't alone in using it...
• Infusions and runes are for puny humans; implant new medical injectors to pump an array of experimental chemicals into your body! Injectors can use any (infinitely reusable) salve in your inventory as long as they're off their cooldown, giving you versatility you've wished you could get with a couple of inscriptions.
• Loot over 70 new and powerful artifacts. Pump lead into foes with big guns, quick guns, and explosive guns! Shred them with saws that maim, saws that thirst for blood, and saws that aren't really saws! Violate common sense by strapping a rocket to your back and calling it a jetpack!
• Enjoy dying in horrible and exotic ways at the hands (or claws, jaws, guns...) of over 140 new creatures! Not mere piles of stats and chain-stuns, these foes will provide unique challenges - suffer the Sunwall's newest cosmic spells, the new breeds of ritches that infest and multiply, the Steam Giants' elaborate defense systems, and find new strategies to adapt to each!
• Earn a trunkload of achievements! Have your accomplishments recognized for liberating the Orcish people, displaying exceptional mercy or cruelty, or showing your prowess with impressive feats! Give a boss a fate worse than death, show Sunwall forces how frustrating it is to fight a Radiant Horror as a paladin, come out on top against impossible odds, display a suicidal lack of situational awareness, and wear a badge of pride or shame for each!
• Read roughly 27,000 words of new lore to immerse yourself in the world! Learn how things have changed since the Scourge's campaign, feel hatred and/or pity for your foes, uncover grand schemes and sinister plots, and notice the elaborate connections between Var'Eyal's numerous factions. Every zone has a story behind it, and every story ties into a bigger picture; enjoy a tale of horror and humor, of intrigue and glory, of despair and hope.
• Earn the right to use the classic (and Ashes of Urh'Rok) classes in Embers of Rage, and the new tinker classes in Maj'Eyal! Play a Brawler in the East to fulfill your life-long dream of suplexing an entire nation of giants, or play a Sawbutcher in Maj'Eyal to shred through Dreadfell in a whirlwind of sawblades and steam!

Combines several smaller utility addons, both for convenience and potentially reduced resource usage on smaller machines.

Includes the following addons:

• Notes to Self
• Timed Rest
• Talent Point Planner
• Opt-in Adventurers Parties
• Inventory Show All Tabs By Default (thru v12d)
• Tier-1 Short Circuit Option
• "Save" Talent/Stat Points
• Use Item Shortcuts (as of v5)
• Auto-Transmo Gems (as of v5)
• Online Indicator (v6a thru v13d.3)
• Inventory Sort Order (as of v7)
• Store Wish List (as of v8)
• Inventory Keys (as of v8)
• Alternate Zones Option (as of v10)
• Go to Landmark (as of v11)
• Enhanced Object Compare (as of v12)
• Enhanced Wield Replace (as of v14)
• Pragmatic Heroism (as of v14b)
• Prodigious Progress (as of v14c)
• Savefile Notes (as of v15)
• Item Notes (as of v15)
• Passive Cooldowns (as of v15)
• Low Health Popup (as of v15)
• Restart Sustains (as of v15)
• Effects Under Actors (as of v16)
• Juggle Hotkeys on Unwield (as of v16)
• Longer Character Names (as of v16)
• Das BLinkenlights (as of v16)
• Wall Clock (as of v16)
• Curse Levels (as of v17)
• Displacement Tracking (as of v17)
• Examine Floor Stack (as of v17)
• Verbose Crystal Resonance (as of v17)
• Golem Gender (as of v17)
• Self-Portrait Over Grass (as of v17)
• Semi-Roguelike Mode (as of v17)
• Menu Keys (as of v17)
• Reflected Golem (as of v17)
• Roguelike Keybindings (as of v17)
• Tooltip Cleanup (as of v17)
• Time Shield Tracking (as of v17)
• Alchemist Notifications (as of v17)
• Don't Summon While Meditating (as of v17)
• Herald of the Herald (as of v17)
• Roguelike Chat Guard (as of v17)
• Sword-n-Boardin' (as of v17)
• Plot Disarming (as of v17)

A superset of ZOmnibus Lite.

Frequently Asked Questions:

• What's the difference between ZOmnibus and ZOmnibus Lite? Can I use them both together?
• What game options does ZOmnibus provide to configure its behavior? (updated for v16)

Places guaranteed water-breathing equipment in Last Hope's lost merchant store and makes it available via an NPC in Irkkk. In the Embers of Rage DLC, also places similar gear in various stores in Kruk Pride. In the Hammer of Urh'Rok campaign, places water-breathing gear in Lake of Nur.

Many in Maj'Eyal have heard of "demons", sadistic creatures who appear seemingly from nowhere, leaving a trail of suffering and destruction whereever they go. Their Fearscape floats far above the skies, watching and waiting, but not idly; their agents scout the land, their legions build up their forces, and their scholars develop new spells and strategies. As the barrier between our worlds begins to crack under their scrutiny, helpless Eyalites have begun to disappear, whisked up to serve as their slaves and playthings. They imbue these victims with magical powers to better survive the ensuing stresses - can you use your new-found abilities to escape the legions of Mal'Rok?

Features:

• Start with a new class, the Doombringer! These avatars of demonic destruction charge into battle with massive two-handed weapons, cutting swaths of firey devastation through hordes of opponents. Armed with flame magic and demonic strength, they delight in fighting against overwhelming odds, softening up the crowd with waves of fire, then feeding on the flames and suffering of their surroundings to stay alive while quickly reducing any group to a pile of ash and gore.
• Unlock a new class, the Demonologist, with an all-new item enhancement mechanic! Bearing a shield and the magic of the Spellblaze itself, these melee-fighting casters can grow demonic seeds from their fallen enemies. Imbue these seeds onto your items to gain a wide array of new talents and passive benefits, and summon the demons within them to fight on your side! Ever looked at a gigantic demon-cursed minotaur and wished it was on your side for once? Well, now you CAN summon one to pound your foes into paste while you cast devastating spells from afar, or call forth a squad of Fire Imps to pelt your enemies to death while they exhaust themselves on your impenetrable defenses! Demons have persistent health, making them a little more precious than disposable necromancer skeletons or summoner beasts, but can be revived from death nonetheless.
• Two new zones, with all-new art, foes, and bosses! You've seen the plains of the Fearscape before, now see the lairs and headquarters of the demons themselves!
• Over 10,000 words of written lore to find! The demons were once an enlightened, peaceful race, hailing from a distant planet known as Mal'Rok; learn what drove them to plot Eyal's eternal torture! Discover monuments to each of the demonic species and noteworthy individuals, showing the place of honor each has among them! Get a glimpse into the culture and daily lives of these sadistic invaders and their brainwashed thralls!
• Unlock a new race, Doomelves: Shalore who've taken to the demonic alterations especially well, corrupting their typical abilities into a darker form. Blink away to safety, transform into a shadowy dúathedlen to hide in the shadows or prey on your foes with blasts of darkness, use your new resilience to soak up status effects and critical hits, and assault your enemies' minds to leave them unsteady in combat!
• Between the aforementioned classes and Doomelves, a whopping 75 new talents!
• Unlock two new cosmetic options! You know you've always wanted demon-horns.
• Two new events, appearing anywhere in Eyal!
• 20 new artifacts, with unique and interesting effects. Collect the Obsidian Treasures to amass more and more power! Slip your hands into the Will of Ul'Gruth and watch your sweeping blows smash down walls! Wear a giant hideous hell-mouth as a fashionable belt!
• 7 new achievements! Conquer the worst Urh'Rok's forces can throw at you, and hang their metaphorical skulls from your profile page!

Adds Vampires as a playable race, as jack of all trades with access to necromantic trees.

This addon is now DEPRECATED and might cause bugs. Instead, please use the Inferno Race Pack!

This adds the Spell/Conveyance tree as a reward for completing the Tempest Peak questline for Angolwen. All the code is borrowed from DG's own, and thus everything works the same as antimagic characters getting Fungus.

Modifies the character creation dialog to bypass the lock check for races and classes, allowing characters to be created using locked races and classes. Doesn't actually unlock anything.

Frequently Asked Questions:

• Hey, the character creation dialog still says I have locked races/classes! What gives?
• Will this prevent me from unlocking things?
• The latest version of the game has a new locked race/class. Will I need a new version of this addon to access it?
• What the heck is this Runic Golem thing?

Stops npcs going hostile when you accidently hit them with something.

Nerfs the debilitating effects of Stun to make it less cancerous.
Stunning now has these effects:
All damage done is reduced by 60%
Up to three random talents are put on a TWO turn cooldown (Up from one)
Stunning NO LONGER has these effects:
Movement speed is reduced by 50%
No talents come off cooldown for the duration.

Allows you to choose which escorts you will encounter at the start of the game.
You may change the future encounters in the game menu (Esc).

There is an option to choose a random escort in case you just wanted to guarantee some unlocks before continuing with the base game's behavior.

Note: You're only supposed to be able to choose the lost tinker once. (Must have the Embers of Rage DLC and unlocked by playing in the Orcs campaign)
Note: Unfortunately the only time that addons can get the possible escort types is after the random escort quest is assigned.
This means escorts added by other addons will not be available for selection, but will still be possible to find using the random selection.

To reach me faster, please leave a message on the Steam Workshop page. I don't get notifications on te4.org so I may take longer to reply.

Dread Knight. More tactically focused than Cursed. Think Gabranth from FFXII meets Hannibal of Carthage.

Sneaks in after Necromancy+, Eternal Darkness and Deathknight are done and makes all their stuff coexist. Probably makes Necromancers OP.

Increases the mastery value increase to 0.4, and removes the 1 increase limit.

More Tales of Maj'Eyal - New quests and zones.

New start zone for Shaloren, cos the Scintillating Caves is a bit mean.
Explore the Echoing Cliffs and investigate the strange lights and disappearances that happen in the area.

New zone for Thaloren, extending the Madness of the Ages quest.
You are sent to the Tree of Ages for wisdom about what is corrupting the forest.

Various enhancements to escort quest NPCs:
- Escorts now follow the player when not close to the portal.
- Escorts occasionally say useful things.
- Escorts heal 5% of their maximum health per turn.

Features:
Cunning/Dead Secrets - generic category available to Necromancer, Doomed and Shadowblade.
Grave Resolve: passive. Bonus to Fear immunity and Mental save.
Darktouched: active. Small resistance bonus against darkness, cold, undead. + touch attack Heals undead/harms others.
Dead Whispers: active. Grants telepathy Undead for a short time. Also let's you see what your minions see.
Necroanatomy: passive. You do increased damage to undead. Decreased damage you do to your own minions. Adds healing to Surge of Undeath. Increases max life of Doomed Shadows.

Spell/Charnel - class category available to Necromancer only.
Blood Burst: radius 1 blight damage ranged burst, splash heals undead.
Grasping Claws: mass pin/bleed.
Meat Shield: sustain, grants a physical ward on kill.
Vampiric Gift: moved from Spell/Grave

Tweaked Categories:
Spell/Grave
Chill of the Tomb: no change
Will o' the Wisps: Also buffs your cold damage and resistance a little. Grants a chance to summon a wisp on spell hitting.
Frozen Flames: Slowly burns status effects from friendly and enemies. Selective about whether it burns beneficial or detrimental.
Ghost Touch: Curse, lowers mindsave, cold resist and stun resist.

Spell/Advanced Necrotic Minions
Undead Explosion: If used on a Wisp, it will be a radius 1 freeze. If used on a Bone Giant it will provide the Bone Shield and do physical damage.
Soulwind: Increases minion's movement speed and grants a chance to recover a soul when a minion dies.
Assemble: Better level scaling.
Minion Mastery: Added a Greater Mummy that upgrades on Ghoul King. Also protects your minions from interminion damage.

Spell/Necrotic Minions
Aura Mastery move to Necrosis.
Undeath Link moved to slot 2, now does less damage to your minions, but also adds all minions life drains together.

Spell/Necrosis
Undeath Link moved to Necrotic Minions.
Impending Doom moved the slot 3.
Aura Mastery added to slot 2.

Spell/Shades
Shadow Tunnel now also includes the effect of Curse of the Meek.
Curse of the Meek removed.
Nether Breach added to slot 2. Its like Aether Breach but does darkness damage and won't hurt minions with Invoke Darkness 5.

Tweaked the talent levels granted by Blighted Summoning.

Also adds in a new class called the Spiritmancer:

The dead do not always rest easy, even free from fell influences.
Some linger, wishing to finish some unfinished business.
Others want to pass on a message to a loved one.
Some seek another chance for glory in battle or revenge against those who killed them.
They all eventually find a Spiritmancer, and bargain temporary servitude for closure.
The Spiritmancer can give form to the lost souls, allowing them to fight again. They also have powerful light and lightning magic.

Categories:
Spirit
Ghost Light: active. Summons Wisps of light. Melee light damage.
Spirit Guide. sustain. each summon you control increases your defense and saves.
Rest In Peace: active. bolt does light damage. more vs undead. becomes a beam at 5.
Spirit Form: active. can walk through walls temporarily. Light affinity.

Karma
Sprites: active. Summons Wisps of lightning. Ranged zappers.
Jolt of Fate: active. Lighting hits a random visible enemy.
Karmic Shield: active. Absorbs damage for a few turns then explodes based on damage absorbed.
Karmic Wave: active. weakish lightning damage cone. stronger when you are low on health.

Life Giver
Clay Golem: active. imbue a clay golem with the soul of a fallen warrior. Golem grants a physical resistance aura.
Poltergeist: sustain. randomly inflicts disarm or knockback against nearby enemies.
Gift of Life: active. give part of your life to your summons, healing them and making them tougher.
Hope: sustain. reduces debuff durations, increases fear resist.

Ghosts
Ghost Bulwark: active. summons a ghostly bulwark which can block attacks against adjacent allies.
Pale Veil: passive. allows your ghosts to Fade.
Ghost Berserker: active. summons a ghostly berserker. Choppy ghost.
Banshee: active. summon a banshee. Caster ghost.

Dawn
Shining Binds: active. ranged explosion for light damage and pin.
Pool of Light: active. Ground effect. Heals friendly. Lightblind enemies.
Holy Word: active. All nearby enemy undead/demons/horrors take light/arcane damage and are deafened.
Endless Light: sustain. increases light damage, light penentration and decreases spell cooldowns.

Justice
Lightning Flash: active. Throws a ball of lightning that explodes for lightning and blindness.
Peacemakers: active. Increases your summoned creatures strengths and speeds.
Indignation: active. Inscribe a symbol of justice on the ground. After a short delay it explodes with high lightning daze damage.
Righteous Fury: Lightning Mastery that also adds lightning damage to minion attacks.

Donators/Buyers bonus!

Adds many new spells for Necromancer and modifies many existing spells, effects and minions. See thread for full details.

Version 3.0: Compatible with ToME 1.5.0

This addon supports game play for character levels higher than 50, primarily for the infinite dungeon (I.D.). This implements a number of subtle changes, rescaling game mechanics and balance for character levels above 50 in the Maj'Eyal, Infinite, and Arena campaigns for ToME. The intent is to make it possible (though certainly not easy) to reach level 500 of the Infinite Dungeon. This is not a nerf or a buff to game difficulty per se, but, rather, an extension of the well-balanced game play from the Maj'Eyal campaign to higher levels.

Some talents and status effects have been adjusted to accommodate the higher character levels possible. You can see a summary of these by checking the "Infinite500" tab in Game Options.

Once a character enters the I.D., the level 50 cap is removed and normal stats-per-level progression is enabled from level 51 onward. The limit on how high primary stats may be trained is removed (limited by character level as normal) and dependent computed value limits are also appropriately increased. No additional Prodigies are gained automatically after level 50. (Note that additional category points and (rarely) Prodigies can be gained by completing I.D. challenges.) Talent mastery levels can be improved more than once, and talent levels are unlearnable as normal in the I.D.

NPC levels in the I.D. have been adjusted to be compatible with higher game difficulty settings.

Most monsters and bosses from the Maj'Eyal campaign are imported into the I.D. along with their respective unique drops.

Traps have been added back to the I.D.

Isolated shops can appear randomly in the I.D. There is guaranteed to be at least one shop on level 1, and they become more common for the first few levels, and then more rare with depth.

Random escorts may be randomly generated on each level in the I.D. unless a challenge has been started, until the normal number (9) have been attempted.

The lichform quest is completed in the I.D. with a new random drop instead of automatically being completed at the appropriate step. There is a new greater vault in the I.D. that affects this quest.

The Corruption/Hexes tree can be learned from a new random drop.

Most major events from the Maj'Eyal campaign are enabled in the I.D., and there is a new event that can award the cursed-aura tree.

Undead characters starting in the I.D. begin with an artefact cloak. This is similar to the Cloak of Deception, but its stats scale with character level and it can spawn randomly for other characters.

This addon incorporates some modified game mechanics:
The ability to shrug off critical hits has been changed. Instead of using the percent value to ignore crits completely, it reduces the crit multiplier by the same amount to a minimum of 100%.

Modified checkHit and checkHitOld functions are employed that allow for wider level differences between opponents (see http://forums.te4.org/viewtopic.php?f=36&t=35229).
Saving throws have been modified slightly to make them more effective at reducing the duration of status effects you fail to save against. (See http://forums.te4.org/viewtopic.php?f=36&t=36715 for details.)

Things planned for the future: scaling of world artefacts with character level, map effects with dungeon level.

CORE CODE CHANGES
Key code changes appear in:

Engine:
engine\generator\map\Static.lua
engine\interface\ActorStats.lua
engine\interface\ActorTalents.lua

TOME Module:
mod\load.lua
mod\resolvers.lua
mod\class\Actor.lua
mod\class\Game.lua
mod\class\GameState.lua
mod\class\Object.lua
mod\class\Player.lua
mod\class\interface\Combat.lua
mod\class\interface\TooltipsData.lua
mod\dialogs\LevelupDialog.lua
data\birth\worlds.lua
data\general\events\damp-cave.lua
data\general\events\drake-cave.lua
data\general\events\fearscape-portal.lua
data\general\events\naga-portal.lua
data\general\events\old-battle-field.lua
data\general\events\rat-lich.lua
data\general\objects\world-artifacts.lua
data\general\objects\world-artifacts-far-east.lua
data\damage_types.lua
data\quests\lichform.lua
data\rooms\greater_vault.lua
data\zones\infinite-dungeon\events.lua
data\zones\infinite-dungeon\npcs.lua
data\zones\infinite-dungeon\objects.lua
data\zones\infinite-dungeon\zone.lua
data\zones\ruined-dungeon\grids.lua

Other addons that affect these files might not be compatible.