Streamline is free to add to your Steam library until 17:00 UTC (12pm EST) on Friday. It's the full game not a limited time demo (and it's usually $20)! http://store.steampo...com/news/25580/
"Get Streamline, a brand new frantically fun multiplayer action game, for FREE from now until November 18th at 9am Pacific. Up to 16 players can compete in a variety of game modes, with fast, fluid free running movement, deep Twitch integration, and ridiculous character customizations. Add it to your account now and play it for free forever!"