I don't have any games to play.

Mirror's Edge.

Or one of my favourite Flash games of all time: Fantastic Contraption

I heard Loadout was nice...
Also, the games in the current Humble Bundle. ;)

Estranged: Act I seems neat.

Play more Left for Dead 2, sad you only have 12 hours or so in a great game.
Also, check this free game out

Dear Esther?

Transformice

Spiral Knights F2P

Buy $1 HB 11 and you're set.

Mass Effect is $5 right now.

I'd suggest looking through some of the Free to play options.

Loadout is awesome (and free), and there are a couple cheap bundles right now that have some really good games

If you like trains, try Open TTD

Blacklight Retribution is a very fun F2P shooter. And current Humble Bundle is great. If Witcher goes on sale be sure to try it out. Also if you have passion for old Westwood RTS games, you can try OpenRA, it's prettu fun. And there's Hearthstone, really fun card game. It's in open Beta now, so you can try it out. Also all the custom maps are now alailable in Starcraft 2 Starter Edition. There's a lot of good things in the Arcade there, includig Starbow - a mash-up between Starcraft 2 and Brood Wars, that you can play completely for free.

Smite is amazing, check it out, it's a war between gods and constantly being updated. It's not on steam though.

One Way Heroics.

The Cat Lady, Amnesia, Syberia 1 and 2, Post Mortem, Still Life, LIMBO. Only if you like adventure games.

One Way Heroics is good, and cheap- you can get it on Playism for $2, and it comes with a Steam key. For free, try Warframe, Gunz2 (maybe? Jury still out), Dungeons and Dragons Online if you want to get an inverse tan, and... well, the free to play section.

Try Warframe if you haven't, pretty good F2P game for me!

Free games. Pick any.

Plenty of options available. Good luck. :)

• Play games on http://www.kongregate.com
• Play any of the Steam F2P games
• Search Google for DRM free games
• Earn coins on places like SGS or Tremor
• Get a bundle with several games for $1
• Try & win some games on several sites like SG
• Trade any leftover bundle games on SteamTrades