Every 6 months or so I spend a few hours with Ski Stunt Simulator. It's difficult to learn but addictive as all get-out when you do.
X-Com: UFO Defense is absolutely amazing, too. The best way to play is to disallow saving during combat (or the temptation is to save/reload like a bitch when something bad happens). You'd be surprised how attached you can get to your team.
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http://www.omgponies.com/
Even scarier, notice the registration date!
Every 6 months or so I spend a few hours with Ski Stunt Simulator. It's difficult to learn but addictive as all get-out when you do.
X-Com: UFO Defense is absolutely amazing, too. The best way to play is to disallow saving during combat (or the temptation is to save/reload like a bitch when something bad happens). You'd be surprised how attached you can get to your team.