Scooby-Doo! Unmasked is an action-adventure game for Xbox where players control Scooby-Doo to defeat foes and gather clues for Velma. The game features costume changes that grant Scooby unique abilities such as kung fu and bat-like flight, essential for completing certain levels. As the third installment to include a laugh track, it also introduces mini-games for the Nintendo DS version utilizing the touchscreen.
The player uses Scooby-Doo to take down enemies and collect clues for Velma. Scooby-Doo can change costumes which can give him different moves such as kung-fu and fly like a bat. Without using these costumes some levels may not be possible to finish. This is the third Scooby-Doo game to feature a laugh track. In the Nintendo DS game, there are a few minigames included to make use of its touchscreen.