Center for Games & Playable Media
- Author(s): Allbee, Chase
- Utpadel, Roxanna
- et al.
The player can win the game by eliminating enough enemies and making it to the end of the levels. This requires him or her to beat the boss in addition to the waves of enemies. At any time the player can lose by running out of lives and health. The player starts with 2 lives and large life bar that is represented at the bottom of the screen. The player is penalized for running into other enemies which then subtracts a predefined amount of health from the life bar.