Defender 2000 is a three-in-one game cartridge. In all three games you fly a lone spaceship attacking aliens descending from the top of the screen before they can pick up humans from the bottom of the screen. The game world is several screens wide and you will zip back and forth as you see new aliens appear on your scanner at the top of the screen. If things get too tense, you can kill everything on the screen by using one of your precious few smartbombs.
Defender Classic offers graphics and gameplay similar to the original arcade game.
Defender Plus adds enhanced graphics and some of the new features of Defender 2000 as a stepping-stone.
Defender 2000 is the featured game and it adds flashy graphics, a pulsating soundtrack, and pumped up graphics to give Defender a fresh look and feel. New gameplay features include powerups and continuous fire.
For a change of pace, there is also a secret game on the cart which replaces your spaceship with a sheep and the humans with llamas!