In the age of vertical scrolling shoot-em-up games, Extermination attempted to do things slightly different in an attempted to mix things up. Released in 1987 by Taito you played as a solider out to rid the planet of nasty alien monsters.
The gameplay is pretty simple, you can move up and down or left and right and fire your gun at the numerous enemies that fly, run and crawl down the screen toward you. What made Extermination a bit different was you needed to kill the monsters in order to replenish your life.
As you were hit your life score would continue to drop, but as you killed the monsters tiny orbs would slowly drop down toward you. When you collected the orbs you would regain health, this helped to make sure that you killed as many monsters as you could.
As you traversed the landscape you could also collect power-ups to increase your firepower and by destroying rocks and trees in your path you could discover hidden bunkers that housed more power-ups.
After mowing down a ton of alien monsters you would encounter a boss or mega-monster, after defeating it you would progress to the next level.
The game was not ground breaking by any means so much so that it did not even make it to a console system, but it makes for a fun arcade game which you can fine under the M.A.M.E platform.