Legend of Grimrock. I started playing Dungeon Master in the late 80's and I've been hooked on that type of games ever since. I've also played Eye of the Beholder, Lands of Lore and lately the Custom made Dungeon Master games.
I feel right at home in Legend of Grimrock, the basics are all there. The puzzles and the monsters are interesting and the graphics is all that I wished DM graphics to be. Over all I find that Grimrock is a dream come true for me and I hope that there will be more of this type of game in the future.
I'm on level 9 right now and I don't get anything done around the house because I just have to beatthisgame so that I can start all over again. =)