Aliens have landed in the Adrian desert.
You have to destroy their weapons using your hovercraft gun.
Use W/A/S/D keys or arrow keys to move the hovercraft.
Click the mouse to shoot at the enemy gun.
If you go too near the enemy the enemy starts shooting.
If the enemy or rockets from the enemy gun hit your hovercraft its strength gets reduced by a certain percent. If the strength becomes zero you lose the game.
The aim of the game is to destroy all the 20 alien gun ships in minimum time.