Critter-Tek is a tongue-in-cheek stuffed animal parody of Battletech that was fully approved and licensed by FASA. Instead of gigantic high tech robot mechs players construct mechanical TEKs that are powered by animals on treadmills with hamster powered gyros and paper mache armor. Weapons include spit-wad blowguns, slingshots and left over fireworks. In fact Critter-Tek uses all the standard Battletech rules and merely renames all the terminology to a furrier anthropomorphic animal genre.
N.B. While Critter-Tek is not a roleplaying game, the roleplaying game supplement TEK-Warrior is included in the Critter-Tek box set.