Shadowgrounds
Titan Attacks
Superbrothers: Sword and Sworcery EP
Avadon: The Black Fortress
Cogs
Zen Bound 2
Titan Quest
Metro 2033
Alien Zombie Megadeth
Astro Tripper
Oil Rush
Broken Sword: Director's Cut
Broken Sword 2
Broken Sword 3
Worms
Alien Breed 2
Future Wars
Greed: Black Border
Trapped Dead
Commandos: Beyond the Call of Duty
Commandos: Behind Enemy Lines
The Void
Trauma


One key each:
(And Yet It Moves, Cogs, Crayon Physics, Hammerfight, VVVVVV)
(Bit Trip Runner, Gratuitous Space Battles, Jamestown, Wizorb)