Leaked GTA San Andreas source code cracked — researchers find remnants of multiplayer and mechanics affecting vehicle handling

Players continue to return to Grand Theft Auto San Andreas, and another reason to revisit the Rockstar classic has emerged.

In early 2025, reports began appearing online about a leak of the Grand Theft Auto San Andreas source code. At that time, researchers faced an issue: the archive was password-protected.

In February, Vadim M., a well-known user in the datamining and research community, shared:

“GTA San Andreas source code has finally ‘leaked’ without password protection. [The screenshots previously published online] were genuine, but had nothing to do with this password-protected archive. As far as I can tell, it is not complete and dates back to 2013. Damn, this is a very old leak.”

Users report that they are examining the code. Among the first discoveries are: traces of multiplayer; mention of mechanics: “The code mentions cut surfaces that affected vehicle handling — oil, snow, ice,” and the GTA SA Classic community also noted:

“The theory from an old Vadim M video about first-person view in GTA 3, where he suggested that the screen gets hazy in the bumper camera view when a car rolls over because a strange line on the horizon needs to be hidden, turned out to be true. In the source code, this detail is described in exactly that way.”

Video: https://www.youtube.com/clip/UgkxyM8-Aq75Te9OvBqUYTNCcMiGIBOwVqwY

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Cover art: Rockstar Games. Image source: steamcommunity.com