Unfinished version of STALKER 2: Heart of Chornobyl has been leaked online. The game weighs almost 200GB and has been in development since 2023.

The source files are encrypted and currently cannot be accessed and played on the title. It's not yet clear which version of the game leaked or how close it is to the final stages. The Ukrainian developer, GSC Game World, has yet to respond to the leak. It was initially thought that a Russian hacker group called Vestnik TSS was responsible.