Spacies by Jim Bagley - NeoGeo Pocket - Shooter

This is a homebrew Space Invaders clone. Spacies is a shooter game in which the player controls a laser cannon by moving it horizontally across the bottom of the screen and firing at descending aliens. The aim is to defeat these rows of aliens that move horizontally back and forth across the screen as they advance towards the bottom of the screen. As more aliens are defeated, the aliens' movement speeds up. Defeating the aliens brings another wave that is more difficult, a loop which can continue indefinitely.