Aliens are sending down a virus from outer space and the only lines of defense humans have are nano machines that can fight them back. Mouse
Every 100 exp you gain a level
Gold, Point and Exp will go up as you level
But also the enemies will become harder
Spiel Tags
aliens, blue, casual, en, flu, Green, kids, Nano machines, red, shooter, SunriseKingdom, upgrade, upgrades, virus, yellow