This may be one to bookmark for later, particularly if you’re at work. It’s a game that requires two people to play on one keyboard, so unless you’ve had some severe budget cuts recently, no one’s going to believe that you and Frank Pelvis from Dynamic Solutions are working on different projects on the same PC. They’ll probably notice the cardboard cut-out styled space aliens zooming across the screen as well. Co-Op, free on PC and Mac, pops you and a friend into ships that are connected by a beam. Since you don’t have guns, you’ll have to coordinate movements so that the beam slices through the monsters coming after you. Take a look.