Played a little demo yesterday and was surprised how many roguelike elements this little action game has. Certainly not a roguelike, but probably a little more than say Spelunky.
Game is called Mega Monster Mania for Xbox live indy and it's pretty fun.
http://xboxhornet.wordpress.com/2010/03/07/mmm-review/It's a dungeon crawl, or more accurately it's a dungeon run. Levels are randomly created, monsters have treasure, there are chests. So far I've found many differen't weapons, armor, and items. After each level you get access to the Dungeon Shop where you can identify, equip, and sell off the excess. You start with 3 lives, but can find more. Death doesn't send you back to level one with no treasure, you generally lose an item or two and some money, and are given a few seconds of invincibility to try to find a safe zone to resurrect.
All and all a fun little game, which so far has alot more diversity and randomness then the previous Dungeon Adventure game for XBLIG. Only costs a buck for the full version. Well worth that investment IMO.