Attack zombies with your ray gun and rescue people!!
You may beat down the zombies by hitting ray beam with them directly.

If you find some drums or dynamites at some stages,
try to shoot them to the zombies. you may damage the zombies.

There is a limit to the number of ray guns that can be used at each stage. When it runs out, people will be attacked by zombies and the game is over.

* The ray beam bounces on a wall
* The number of bullets that can be used differs depending on the stage
* More stars can be obtained by defeating zombies with fewer bullets
* Game over if you can’t defeat zombies before you run out of bullets