This game is like space invaders, but much more extreme. Get new guns, fire at piranhas and avoid the lava. Fun and intense.
Move around the cave and shoot the piranhas with your gun.
Gradually as you get more points bonus piranhas appear and grant you with a new gun or extra health.
The aim is to get 10000 points.
You can switch between guns you have unlocked by clicking the arrows beside the current gun, to pause, press the pause button in the top left-hand corner.