You start off as a starship pilot just minding your business, plodding along through the vast empty expanses of space, when all of a sudden the hyper-drive malfunctions. This can't be good. Somehow the hyper-space jump manages to break reality just a little bit, and as you pop out the resulting wormhole, you realize that replicas of yourself will soon be hot on your tail. Your only chance now is to visit planets as they materialize in order to learn how to make the copies of yourself go away before they inevitably ram your ship and send you to the space version of Davy Jones' locker.
Like Time 4 Cat, this is a mouse avoidance game where the speed of the objects to be avoided are based upon the speed at which you move your mouse. Don't ever want to die? Simple, don't move. Unfortunately, the collectible objects are not on the same malleable timeline, and their point value decreases constantly whether you are moving or not.
Where Replicat diverges from its intellectual predecessor is not only in its sci-fi theme, but in the fact that the objects you are forced to dodge are copies of yourself. Each new starship on the scene apes the path that you've been taking all along, and the longer you manage to stay alive, the more of them there are. This adds quite a bit of depth to the formula, as you not only worry about the present, but think about the future, plotting a course now that will be easier to dodge when your lethal copycats trace it.
Add to this a side quest or two and a very neat sort of power-up that lets you see the immediate path of your counterparts and what you have is a surprisingly well fleshed-out game based upon one of the simplest gameplay mechanics in casual games. As more copies present themselves, the tension quickly builds to manic proportions, while the ability to effectively choose your own playing speed really makes it accessible.