From the back of the rulebook:
A delirious role-playing game in the best (and funniest) space opera tradition!
When the Dadourunrun Conundrum Empire's bureaucrats slightly "misplace" Earth - the coolest planet in the Known Universe - during o galactic reorganisation, you start looking for it, of course! Live the great adventure, with the not-so clever Leroy and the beautiful Tabada. Explore the Known (and Unknown) Universe while visiting strange places and meeting even stranger beings!
STAR RIDERS is a wacky science-fiction role-playing game. It comes complete with rules, equipment and character stats. Star Riders is also compatible with the Teenagers From Outer Space role-playing game from R. Talsorian Games Inc.