aRealCyborg: can you pre ask?
That wouldn't be fair to anyone actually following the rules now, and who'd end up being beaten to something by default, would it?
Going by the list of requests posted by theslitherydeee and what was posted since, the updated list of available games, assuming all would be approved, would be:
The Adventures of Shuggy
Age of Wonders (x2)
Bionic Dues
Deponia (x2)
Dragonsphere (†)
Eschalon: Book 1 (†) (Note: Key comes with a free copy of Bio Menace.)
Gateways
Little Big Adventure 2 (Twinsen's Odyssey) (x3) (†)
MDK (x4) (†)
Mount & Blade
PixelJunk Monsters HD
Train Fever
WARSOW (†)
Witcher: Enhanced Edition, The (†)
(In case Hard West: Scars of Freedom also includes the base game, that would also be available, since Pouyou-pouyou specified that the request was only if it's just the expansion.)