Galactic Warrior Rats
Galactic Warrior Rats is a video game developed by Mikev Design, published by Summit Software and released in 1992 for the Amiga and ported to DOS in 1993. The game was also released in 1994 in the "Famous Collection" game compilation. Plot. Three laboratory rats named Einstein, Newton and Darwin are on board a spaceship, when unexpectedly the spaceship crashes into a mysterious planet called Smeaton Five. The explosion of the spaceship kills all on board, but mutates the rats into humanoid-like creatures, they self-christen Galactic Warrior Rats. Smeaton Five is highly polluted and is  rigged for destruction. The three rats venture through the planet's dangerous complex to destroy any defense robot that gets in their way and ultimately shut down the core computer to save Smeaton Five and themselves. Gameplay. The player chooses of one of the three Galactic Warrior Rats who pilot a biosphere vehicle. The biosphere can have its speed, weapons, ammunition and handling upgraded. Upgrades require credits. During the gameplay, the player will maneuver the rat in his biosphere. The object is to guide the biosphere through maze-like levels to the exit. The biosphere can fire in one of  eight directions. Destroying enemies earns credits. Touching enemies drains the biosphere's vitality. If one rat dies in the biosphere explosion, the player must choose a different rat to play. If all three rats are destroyed, then the game is over.