Dragon Quest Heroes: Rocket Slime is a game in the Dragon Quest game series series for the Nintendo DS. It was developed by TOSE, the studio responsible for the first four Dragon Quest titles (as well as several other spinoff games.) Although most games in the series star a human protagonist, Rocket Slime is centred on the titular Rocket, a Slime. Ironically, Slimes are usually weak enemies and the mascots of the series.