While I may not own this game on Steam, this is still the only visual/sound novel I've ever liked, due to it's depth and story. Mindf***s abound. 10/10

If you're on Steam, Cililization V hardly needs any introduction. With all of the expansions Civ V is an amazingly polished game. 9.5/10

Borderlands 2: GoTY Edition offers so much fun content at such a low price it's impossible to pass up. Best with 2-4 people, this game is amazing. 10/10

Castle Crashers if a fun, exciting game best experienced with four people, preferably in the same room. Lots of fun beating things up. 9.25/10

Still my personal favorite Civ game, Civ III stands the test of time as and exceptionally well-polished game with great mechanics and features. 9.5/10

Great rocket simulator/rocket crash simulator. Lots of experimentation, lots of possibilities, and lots of Kerbals make for a great game. 8.75/10

Co-op platformer done right. Funny, chaotic fun best with a friend (or three). Great gameplay, and soundtrack compliment hilarious narration. 9.25/10

XCOM: Enemy Unknown, with Enemy Within, is a tense, fun tactical experience. Long War (free mod) adds challenge and depth. Highly reccomend. 9.75/10

A great game about making games. Easy to learn yet extremely difficult to master, this game is great for casual or extended play. 8.75/10

One of the most fun indie platformers out there. Character traits spice up an already rock-solid game with lots of great ideas rolled into one. 9.25/10