If you're looking for cooperative games for your favourite console, handheld device or computer, it can be tough to deduce what the "multiplayer" on the box really means. Player versus player? In person cooperative? Online cooperative? Co-Optimus dishes the dirt.
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Let's say you're looking for a game for your Wii that features cooperative play where both players play in person, using the same Wii and the same television. You don't get that information just from looking for a game that says "multiplayer" on the box or the reviews. Even if you think you've found a game it might only feature cooperative online play or cooperative during mini-games but not the actual full campaign of the game.
Co-Optimus is a website devoted to cataloguing the nuances of cooperative play games to help you quickly drill down and find what you're looking for. You can filter your search with variables like whether or not the cooperative play is on a split-screen, if you need multiple consoles or if it's "couch co-op" where you share the console. You can even search for details like whether or not players can drop in our out — an important feature if you don't want to be dependent on people sticking around for a whole gaming session.
Once you find games that look promising you can click on the name to read a detailed overview of the game and the type of cooperative play, check out screenshots/videos of the cooperative play in action, and read user reviews and ratings. Have a favourite site for game comparisons? Let's hear about it in the comments.