Scooby-Doo! Unmasked was met with average reception. GameRankings and Metacritic gave it a score of 64.50% and 62 out of 100 for the Xbox version;[3][7] 66% and 64 out of 100 for the GameCube version;[1][6] 65.96% and 61 out of 100 for the PlayStation 2 version;[2][8] 61.60% and 48 out of 100 for the Game Boy Advance version;[5][10] and 63.75% and 60 out of 100 for the DS version.[4][9]
Frank Provo of GameSpot gave the PlayStation 2, GameCube and Xbox versions a 5.7/10, praising its graphics and sound but criticizing its difficulty and length. He stated that "Scooby-Doo! Unmasked isn't much of a game, but it is a decent way to interact with a feature-length Scooby-Doo story."[26]