Battle For Bikini Bottom (unreleased PC Edition; 2003)

SpongeBob Squarepants: Battle for Bikini Bottom was a video game released in 2003 for the Nintendo Gamecube, Playstation 2 and Xbox. The game revolved around Spongebob,Patrick and Sandy traveling around Bikini Bottom to stop the army of robots created by Plankton and to collect golden spatulas. The game itself received positive reviews and won a Kids' Choice Award for Favorite Video Game, the Nintendo Gamecube version obtained the Players Choice award, Greatest Hits on Playstation 2 and Platinum Hits on Xbox Respectively. However, there was also planned to be a PC version released for the game as well, but was cancelled before release, and the PC version was made into a point and click adventure game instead. It remains unknown why it was cancelled, and remained unknown until December of 2017, where an anonymous 4chan user posted 4 screenshots of the PC version, which they claimed they downloaded from Heavy Iron Studios website sometime in 2002 or 2003. The thread has since been deleted, and only 3 of which have been reposted. From the screenshots available, it seems the original version would have been closer in style to the console versions.

References

4chan Thread