Paranormal Waters

Paranormal Waters is a SpongeBob SquarePants videogame crossover with Gravity Falls. It was released on August 17th, 2017.

Plot
''Dipper and Mabel accidentally discovered a portal to the underwater world and got into Bikini Bottom. There, Plankton teams up with Bill Cipher, ultimate super-villainic triangle. SpongeBob and gang is up to rule it out.''