Monaco: What's Yours Is Mine (2013)

Monaco: What's Yours is Mine: free games with gold game I got in September I believe

Portal (2007)

If you're late getting into games, start with any of these We polled game designers who have worked on Quake, Mass Effect and Deus Ex, as well as other notable video game industry figures for their picks for the smartest games around.

SpaceChem (2011)

Put your engineering and fake chemistry skills to the test in SpaceChem, a scientific puzzler set in colonial space.

Geometry Wars (franchise 2005-2008)

While weaving through mesmerizing waves of brightly colored attacks, players move their ship and aim their fire independently to rack up high scores, in a modern incarnation of arcade shooter game play.

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