As a big DOOM fan, I find Chasm: The Rift challenging. The game has a good arsenal and decent voice acting, but the locations can be confusing. It's a cool game and quite interesting.
Legend of Keepers: Prologue has a nice design, but unfortunately nothing is known about the characters. The game is large enough for a demo.
Tomb Raider: Anniversary is a remake of the first part of the Tomb Raider series. The game is old, but this does not prevent it from delighting the player. Beautiful cinematic views, well-chosen puzzles that you cannot predict, create something unusual from this game, which can be played every time as in a new way. I personally love this game.
