Sludgie is a slushie company featured in Grand Theft Auto V.
The company is a parody of ICEE, and more specifically Slush Puppies. It is also a parody of Slurpee, especially since it is common at 7-Eleven stores and this machine can be found in 24/7 stores. Its logo is a penguin with a snowflake on its body. It is sold in all accessible 24/7 and Limited Service stations. Sludgie cannot be consumed by the player, and it plays no role in the storyline whatsoever.
Advertisements on billboards for Sludgie can be found in some areas around East Los Santos.