OnLive has taken four games and making them free to play through All Hallows Eve. From now through Monday, October 31st at Midnight, PDT, games Amnesia: The Dark Descent, F.E.A.R 3, Metro 2033, and Orcs Must Die will all be absolutely free to play on OnLive, both in the U.S. and the UK. In addition, as a special bonus, if you Like OnLive on Facebook you can play a fifth mystery game which will be announced on Halloween!
"There’s a little something for everyone during OnLive’s Free-Play Halloweekend and the best part is we’re giving everyone free access to four terrific games all weekend long," said Matt Jensen, OnLive Community Manager. "Whether it’s horror, FPS, multiplayer or action that you’re looking for, play for free on us, and make sure you ‘Like’ us on Facebook because we’re making a fifth game available on Halloween that will be free to play all day and night."
If you'd prefer to game locally instead, using your own CPU and GPU power, check out the Halloween Steam sale.