This is a roguelike originally developed specifically for the Gameboy Advance (GBA). It is built around replayability and long term ergonomics, not short term learning. It uses actual graphic tiles (16x16) rather than the traditional characters.

SOURCE

http://www.zincland.com/powder/

Reviews:

* [Sep 9, 2008] by CautiousChaos using Treo 700w
Liked the PC version, though the PCC version doesn't appear to support square screens (320X320) I believe.

***** [Aug 9, 2008] by Darkehorse using HTC Touch
I agree! What a great roguelike. Sure it's tough, but Roguelikes are supposed to be! Great graphics too, no crappy ASCII.. This is what a pocket PC game is supposed to be like.

**** [Aug 7, 2008] by Rowdster using TYTN II
Wow, this is great! What an amazing game. I haven't been able to play it yet for more than 10 minutes, and I can only kill a mouse so far, but I really like this style of game(think 80s dungeon adventure) and look forward to getting to play it more.