· Secret Rooms: There are many secret rooms that can be entered by shooting combinations of inanimate objects in the game. For example, shooting all the office windows out after going up the ladder in the hangar will take you to "Shake your Buddha", where you can take shots at the stationary heads of the development team and increase your score and streak. Taking out all the windows on the back wall of the hangar will take you to another secret room full of power-ups.
· Kron Hunter: Instead of starting out the game normally, avoid shooting the aliens. Instead, shoot the first three members of STAAR that appear on the screen (the guys in blue). Do not worry, after your health gets down to one, the aliens will not hurt you any more. After shooting the third member of STAAR, you will get an info screen talking about Kron Hunters, and you will start the game over as one. The graphics palette will be completely whacked, and when you are done, a Kron Hunter symbol (a green K) will appear next to your high score, rather than a military ranking.