Muppet Monster Adventure

The game draws heavy inspiration from 3D platformers like Spyro, Crash Bandicoot, and Super Mario 64. The gameplay consists of Robin using several context-specific transformations inspired by the monster transformations the Muppets themselves undergo. Robin can use the transformations once he has collected all four pieces of an amulet bearing the relevant Muppet's face. Noseferatu's amulet grants Robin the power to glide, the Wocka Wocka Werebear's enables him to climb, the Muck Monster's allows him to dive underwater, Ker-monster's permits him to push and pull large blocks, and the amulet bearing the Ghoul-friend of Ker-monster gives him the ability to perform door-smashing karate chops.

Each level requires a certain amount of 'evil energy' (dropped by enemies and scattered freely around all levels) to open it, and only three may be unlocked before a boss has to be fought. Bosses, however, do not require the collection of evil energy but instead need "Muppet Tokens." Once a set number of these have been collected from levels and minigames, the boss is accessible and can be defeated, opening up the next stage of the game.

Robin the Frog is delighted that he and the Muppets are finally going on a vacation, but his hopes are dashed, when he realizes their destination is a creepy castle. His Uncle Kermit reminds him that they had to accompany Dr. Bunsen Honeydew to hear the reading of his uncle's will. After becoming frightened of his surroundings and the door of the castle being opened by a mysterious figure, Robin faints.

He wakes up to see Pepe the King Prawn, Beaker and Dr. Bunsen Honeydew in some sort of underground laboratory, and Honeydew explains that that after Robin fainted, the group of Muppets was ambushed and many of them were transformed into monsters by the castle's 'evil energy', which has begun infecting the surrounding village, causing it to become twisted and evil.

The game received average reviews according to the review aggregation website GameRankings. GameSpot's Scott Steinberg called it 'surprisingly polished and enjoyable', but was unimpressed by the game's sound effects and 'forgettable' soundtrack. Jeremy Conrad of IGN disagreed with Steinberg's verdict on the soundtrack, deeming it 'probably the best part of the entire game', but found the gameplay 'isn't really anything we haven't seen before'.