The object of the game is to get to the end of each level while destroying as many aliens and collecting as much treasure as possible. There are six types of aliens - one that sits still, one that chaises you, one that shoots at you, one that teleports to your location to attack you, one that lays eggs which hatch more aliens and one that throws bombs at you. If you touch any of them, or get shot, the level will end. Shooting alien eggs subtracts from your score while crashing into them to destroy them improves your score. There are four types of ammo for you to use. The first is a normal bullet that can ricochet around the room, the second is a grenade that explodes on impact, the third is a multi-bullet that splits into two normal bullets when hitting a solid obstacle and the last is a bomb that you place which explodes after a short delay. There are also mines and spikes that must be avoided. You must complete each level before you are allowed to try the next level. Touch the screen to set the crosshair, and either press fire to fire the next bullet, indicated on the sliding ammo rack next to the fire button, at the crosshair or press the move button to move toward the crosshair. When pressing and holding down the move button you will see a force rod extend above the move button. Releasing the move button when the force rod is higher will move you at a greater speed. You can replay levels multiple times if you like. Any unused ammo will increase your score for that particular level. Also, do not forget to collect the coins on your way through to increase your score. You can enter a high score after completing all levels in the game. There are a total of 18 levels in the game.

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Screenshot 4 (not to scale) - click on photo for full view.

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