I'm interested whether T-Engine4 can handle modules with non-roguelike gameplay well. For instance, I wonder whether you can create more RPG-like modules, where you control a party of adventurers and walk around predefined maps, battling monsters and gathering treasures - and you control all of them directly. Here are some of my thoughts on this:

1. Making a module with more RPG-ish gameplay would probably be simple enough. The main change from standard gameplay would be that you now control several characters instead of one, and the battle system would probably need to be altered as well.

I did experiment with making a JRPG-like module, where you walk around a dungeon with random encounters. When an encounter started, the battle between the party and monsters proceeded in a separate dialog. Your characters could level up, you could use spells in combat to damage enemies, heal yourself or to temporarily power your characters up. It was back in beta4, and now I'm considering porting it to the current version.

2. A turn-based tactical RPG - think Fire Emblem, where your characters and enemies take turns moving around the battlefield and attacking, would be harder to implement. I've seen this idea proposed on this site before. In such a module, the combat situations - the area where the fight is happening and the enemy combatants - would probably have to be stored in a separate file, and loaded when required.

3. Speaking more generally, in such non-standard modules death and saving would probably have to be handled differently. Death no longer should be permanent, and saving probably can be made possible only at certain spots - in a town or at special locations in the dungeons.

As I can see, a module with RPG-like gameplay would be easiest to create. I've managed to get the basic elements working, so it looks possible.