Pigsaw Final Game is when Pigsaw is captured by Obama (a twist) and now he has to get out from the maze. A majority of characters from previous Inkagames make appearences here, also, this game is the debut of SpongeBob and his friends, which would later be used from two themed games and cameos.
In the middle of the game, Pigsaw borrows Sandy's Swimsuit and air helmet and dives into Bikini Bottom (there is a key down there that opens the door to the left of Sandy). Plankton kidnaps Pigsaw for intruding, then Pigsaw is locked up and saves SpongeBob, who was also captured. Then SpongeBob is playable until Pigsaw is free.
Thought Paris Hilton was alredy one of Pigsaw's victims when this game was launched, she is not included along with the other victims in that moment. This suggest either that Pigsaw and Paris ended in good terms after Paris Hilton Game or that Paris' game was not canon due to Pigsaw's different look in that game.