Shoot or squash the monsters to defend the earth.
You can break the wall,floor,ground,building everything in this game.
Power-up items for your health and weapon will show up after killing the monster.
You take those items and you get health back or your weapon upgrade.
You can fly in the air by using jet,but it consume your fuel.
Fuel is increased with time.
Enjoy beautiful explosion, smoke, flames,pleasant destruction.

[Key operation]
WASD : move (W key for jet propulsion)
1 to 5 keys : switch the weapon
Esc : Quit from game, close the app.
Alt + Enter : toggle fullscreen and window mode.

[Mouse operation]
Mouse pointer is used as aiming-coursor for weapons
Left button : shoot