SpongeBob SquarePants: Underpants Slam (found Xbox Live Arcade game; 2007)
Spongebob Squarepants: Underpants Slam is a 2007 Xbox Live Arcade game released alongside Screwjumper! It's an action-puzzle game that includes the characters from the show. Due to a lack of interest, the game's servers are still up but are often empty, and the game is no longer available for sale on the Xbox Live Marketplace.
The "lostness" of this piece of media has been fiercely debated over Lost Media Wiki's chat group, and was determined "Inaccessible," as many users have it downloaded on their hard-drives, but it's not currently available to those who don't have it and want it. As such, this game falls into a special in-between group of lost media, since it isn't quite lost.
Interest in this game derives from the intrepid search of Lost Media Wiki chat user Brodster. A fan-made forum [1] was born from Brodster's efforts to find the game again, and his efforts can be seen throughout the SBMania forum.
Gallery
Underpants Slam Gameplay
More Underpants Slam Gameplay
Excerpts of Heated Debate Over Its "Lostness"
Sources
https://en.wikipedia.org/wiki/SpongeBob_SquarePants:_Underpants_Slam http://www.sbmania.net/forums/topic/52077-anyone-have-a-lost-media-wiki-acount/ http://underpantsslam.freeforums.net/