Near the stadium is a billboard of Ratchet and Clank from their appearances in Ratchet & Clank: Going Commando.
Contributed by ReakMayhem
Sandover Village can be accessed and explored though a glitch in the first cutscene. However, since the area was only meant to be used in said cutscene, the village does not have any characters and the levels Forbidden Jungle, Geyser Rock, Misty Island, Sentinel Beach, and Fire Canyon are inaccessible as there is nothing to call up for these areas.
Contributed by gamemaster1991