Gaming can be a solitary act.

Spending hours perfecting the right kill or grinding your way through achievements. Even when gamers are blowing stuff up online the other players are distant. Co-op split-screen offers the kind of retro gaming experience that brings friends together to yell at each other about who sucks worse than the other. It can be one of the must fun ways to play or if you're unlucky enough not to know a few simple rules, a miserable experience. Because not everyone can play well with others.

Follow these ten simple rules of co-op gaming to keep the friends you have and get some social gaming time in. Partnering up in co-op can result in some of the best team action. But no rage-quitters allowed, and please stop throwing things. Here's 10 easy steps to the Co-Op Code so your friends don't end up hating you.

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