To obtain higher scores, use the Features wisely to obtain power-ups and start mid-game bonus Rounds. If you complete the bonus Round goal, Fever Time begins where you are given limited time use of Power-up weapons. At this time, you can earn additional points that can't be earned during normal play. Use level, score rate, and chains and Breaks to maximize your score.

You can obtain higher scores by strategically attacking columns of invaders to clear the screen (one of several actions called Features), causing a flashing UFO to fly by. When you shoot the flashing UFO, the game jumps you into mid-game Rounds for additional bonus points.

High scores are resulted from successful combinations of Chains, Features, Breaks, and No Misses.