Needs suggestions for a giveaway ($20 limit)

20 fortix. now. jk xD

How about blocks that matter? or recettear? or beat hazard? :O

Seconded Recettear, or perhaps a Binding of Isaac or two (:

Grotesque Tactics: Evil Heroes

Dungeon Defenders

"The Binding of Isaac".

It's an awesome game, it's worth the money.

Orcs Must Die!; Dungeons of Dredmor; Bastion; DeathSpank

2 Real Dark Messiah of Might and Magic giveaways since they are such a pain in the butt normally.

I'm going to second "The Binding of Isaac"

Anything from the THQ sale (hopefully DoW II will be on sale shortly)

Mount and Blade is always a good choice. A wonderful game!

Recetear is good, possibly a little girly/cute for some though (more chances for those that want it then?)
I'd go for that companies sequel, "Chantelise"
Of course Dungeon Defenders is there, especially want for a pre-order version.

Amnesia: The Dark Descent

Binding of Isaac for sure. Looks totally sweet.

dungeon defenders, it's a samrt choise :)

I'd go with orcs must die or the binding if isaac

My vote is for Reccetear

Dungeon Defenders

binding isaac / orc must die

PAYDAY The Heist ($17.99 USD), Titan Quest Gold ($13.33 USD), The Witcher: Enhanced Edition Director's Cut ($9.99 USD), Orcs Must Die! ($14.99 USD)

Left 4 dead 2, but short giveaway - dont like when 2-3k+ entries

I just noticed this. You can set the price range. Lots of people want Limbo.

Fallout New Vegas, it's the most wanted game at 20$.

Personally I'd say L4D2, but I think a lot of people have that now and something else may be more appreciated.
So in that case, I'll +1 to The Binding of Isaac. It's an awesome game and quite cheap, so you could buy multiple copies and make multiple people happy :D Yay!

EDIT: Or, as Mavromatis said, take a look at the wishlist page. LIMBO seems to be the most wanted in the $0 - $20 range, and is also in the multiple copies price range.

Dungeon Defenders

Dungeon Defenders :D