$20 on Steam, what do

[Pyndul]

Fallout 3 or New Vegas?

[Ad Bot]

[Titanium Man]

^ good job not loving reading the 2nd sentence of the OP
is it that hard

[Dreams_Of_Cheese]

Scrape up 3 extra dollars and buy Kerbal Space Program

[Titanium Man]

^ this guy knows his stuff
i put over 80 hours into that game, 'tis a good game

[NalNalas]

^ this guy knows his stuff
i put over 80 hours into that game, 'tis a good game

forget yes

[SpongeCraft1212]

Sonic & All-Stars Racing Transformed.

It's a pretty good racing game. I'm pretty sure the game is $14.99 so you wouldn't need to get some more dollars. If you're lucky, you might be able to catch it on sale.