Demon Attack
Platform: Intellivision
Region: USA
Media: Cartridge
Controller: INTV
Genre: Shoot 'em Up > Action 
Gametype: Licensed
Release Year: 1982
Developer: Imagic
Publisher: Imagic
Players: 1 or 2 Alternating
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Demon Attack is an arcade action game with gameplay similar to Space Invaders. You control a laser canon at the bottom of the screen, and need to destroy wave after wave of brightly colored demons. The demons bounce around the screen in bizarre patterns, and try to destroy your canon with bombs or lasers. When you shoot a demon, it will be replaced with another or will split into two smaller demons depending on which wave you are playing. When the required number of demons for the current round is finally destroyed, you can move on to the next, more difficult round.
 
http://www.mobygames.com/game/intellivision/demon-attack