SpongeBob SquarePants: Underpants Slam is an action puzzle game developed by Blitz Arcade featuring licensed characters from SpongeBob SquarePants. The game was released on Xbox Live Arcade on December 26, 2007. The game, along with Screwjumper!, is publisher THQ's first game designed for download. It was delisted from the Xbox Live Marketplace in January 2013 after the bankruptcy of THQ, however it was later relisted in August 2018 by its successor company THQ Nordic.
A storm current has disrupted a shipment of the undergarments of Lord of the Sea Neptune's underwear, spreading them across the ocean floor. Neptune has called upon his subjects to collect the lost undergarments, with a reward offered to the one who collects the most underwear.
Players progress through 10 levels of play by collecting 99 pairs of underwear in each. Playable characters include SpongeBob SquarePants, Patrick Star, Eugene Krabs, Sheldon Plankton and Sandy Cheeks. Levels are populated by jellyfish, who can swim away with pairs of underpants. These stolen underpants can only be retrieved by attacking the jellyfish, failure to attack at the right moment results in an electrical shock. Most pairs of underpants are scattered around levels, though several are hidden in objects such as pipes and boxes which must be destroyed. Power-ups such as a magnet to draw in nearby bloomers can be collected throughout the levels, though some can have negative effects such as reversing the controls.
- Kietzmann, Ludwig (2007-12-21). This Wednesday: SpongeBob gives XBLA 'Underpants Slam!'. Joystiq. Retrieved on 2008-01-04.
- SpongeBob SquarePants Underpants Slam! (en).
- Sinclair, Brendan (2007-10-24). SpongeBob launches THQ XBLA efforts. GameSpot. Retrieved on 2018-09-20.
- Smith, Rebecca (2018-09-05). August 2018 Delistings: Disney Fantasia: Music Evolved and Relistings. Retrieved on 2019-05-20.
- SpongeBob SquarePants: Underpants Slam - Game Detail Page. Microsoft. Archived from the original on 2008-01-02. Retrieved on 2008-01-04.
- Sewart, Greg (2008-01-02). SpongeBob SquarePants: Underpants Slam! - Xbox Live Arcade review. GamesRadar. Retrieved on 2018-09-20.
- Chapman, David (2008-01-03). SpongeBob SquarePants: bloomers Slam! Review (Xbox 360). TeamXbox. Retrieved on 2008-01-04.
- Ahearn, Nate (2008-01-02). SpongeBob SquarePants: Underpants Slam! Review. IGN. Retrieved on 2008-01-04.
- Archived copy.