There are roughly 40 levels, even though you can continue to play past that. The number counting down up top is the timer. You can get 5 weapons and 5 defenses. If you beat the enemy by a lot you will skip a few levels. Get a high score to get more ship points. If you avoid the blue things for 1000 ticks (there are 3000 in a round) your score will increase. There are wormholes eventually, and the gifts will help you. Level codes are given at the end of every five levels. 'P' pauses, 'R' resumes, 'Backspace' quits a level. Good luck.
Copyright 2003-2004 by Dave Todd at squareFuse.com.