One million years into the future, an intergalactic dispute erupted into a mind-blowing spacial explosion
Sending the Earth and all of civilization back to the Stone Age. Shortly thereafter, Earth found itself under attack by three prehistoric creatures: the great Condor, the Nirobean Spider and the vulcanian bat.
As the commander of the only sophisticated weapon to survive the "Millenium Warp," you are commissioned to ward off the deadly invaders long enough for the few remaining scientists to develop a way to reverse the time warp and return mankind to its rightful place in the time stream.
Assuming you are up for the challenge and agree to the mission, you must maneuver your galactic firebase disintegrator horizontally along the bottom of the screen, blasting away at the floating, swooping and attacking creatures. The condors are large and ferocious, the spiders are very quick, and the bats are extremely agile.
You begin the game with six firebases and will gain an extra one for every 1,000 points scored (up until nine bonus ships have been received). Two ship sizes are available, the larger being the more difficult to keep out of harm's way.
As you progress from level to level, the creatures increase their rate of descent and get trickier and trickier with their attack patterns, even going so far as to disappear on one side of the screen and reappear on the other. The game ends only when all of your firebases have been destroyed.