Cyclon

Cyclon is a space-themed reflex game that is similar to Midway’s Space Zap.
The object of the game is to survive as long as possible by defending your
star base from enemy star cruisers and deadly satellites. The game has 99
levels of difficulty, and the player may begin at any level from 0-10.

The player’s star base is located at the center of the screen and enemies
firing light missiles will approach from all sides. The star base is armed
with lasers that can be fired in all four directions, as well as a limited
amount of anti-matter bombs which destroy all on-screen enemies. Shields can
also be activated to intercept enemy shots. Firing lasers and using shields
will use up energy, and if the player’s energy runs out, their star base will
explode. If the player does not destroy enemies or intercept their shots,
their missiles will inflict damage to the player’s star base. Shields will be
rendered unusable on any part of the base that is hit by an enemy. The star
base will be vaporized if the enemy shots penetrate the reactor at the base’s
core.

The player starts the game with three bases and will earn an additional one
each time a level is completed. Additionally, any extra energy remaining at
the end of each round will be converted to extra points. When all of the
player’s star bases have been lost, the game is over.