Word Square - Sudoku, but with letters and words.
Minaurs - A unique adventure game full of exploratory expeditions.
SudoKoi - Your next favorite pastime, like Sudoku
Limbo - “Dark, disturbing, yet eerily beautiful, Limbo is a world that deserves to be explored.” Joystiq. “Limbo is as close to perfect at what it does as a game can get.” Destructoid. Buy LIMBO: Special Edition.
UsDoku - Play real-time multiplayer Sudoku.
Elephant Taco Hunt - Help the hipster elephant get all the tacos