Generica Invasion - Version 1.0 Generica Invasion is a free game where you have to protect your planet against the attack of Generica aliens. You have to be sure that you are good enough for the job. That is why you have to pass numbers of tests. First is the test of your flying skills in zero gravity environment. In second test you need to circle around your planet without getting lost in space. The third test is a time travel and so on.