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The Insomniac Museum was a special location, accessible after the player has beaten the game.
After completing the game and starting Challenge Mode, one could access the museum via a teleporter in Grimroth Razz's garage on planet Veldin. The museum was quite different from past ones, being smaller and just featuring posters, statues, etc. from past games rather than ideas cut from the game. The museum was made up of hangers in a garage environment. The first hanger consisted of cutscenes from the game, which could be rewatched, as well as three bonus videos: two Japanese commercials for Ratchet & Clank: Going Commando and a commercial for Ratchet & Clank (PS4). This and the rest of the hangers had items from past games. At the end, computer terminals can be seen showing images from the original Ratchet & Clank.