Buster Jet

Survive and massacre an onslaught of flying alien swarm.

Controls:
ARROW KEYS - flying
Z, X, C, V - shooting (4 different weapons)
LEFT SHIFT - booster
ESC - pause

Additional info:
Kill enemies to level up. When you level up you regain your HP and power up your weapons a little bit.
Number of enemies increases the longer you survive.

Update:
v03: Menus controlled with keyboard. Game can be restarted after death without going back to main menu.
v02: Fixed bug where difficulty wasn't resetting after death.