Alien Swirl
_Alien Swirl_ is a fixed screen shoot ’em up in the style of Moon Cresta and
Phoenix. The player controls his ship down the base line and has to shoot at
the aliens swirling around above him. There are a number of aliens for each
stage and the player has to shoot them all down to move on to the next stage.
The first wave has only three aliens but as the player progresses through the
waves the number of aliens increases. There is also a mother ship similarly to
the one in Space Invaders that occasionally moves across the screen. After
every four waves there is a refuelling stage where the player has to dock his
ship with a tanker. This works similar to Lunar Lander. Bonus points are
awarded depending on how well this is done and at every 10000 points the
player earns a bonus life.
Alien Swirl