Dungeon Crawl Stone Soup is a fun, free rogue-like game of exploration and treasure-hunting in dungeons filled with dangerous and unfriendly monsters in a quest for the mystifyingly fabulous Orb of Zot. For more information see: http://crawl-ref.sourceforge.net

Release notes:

Same features at standard 0.4.5 and ported to the Wii with some interface changes to make it work without a keyboard.

http://wiibrew.org/wiki/DungeonCrawlStoneSoup