Forza Horizon 6’s full PC version leaks online ahead of its planned May 19 release date, with multiple outlets reporting the issue stems from an alleged Steam upload mishap involving an unencrypted build. Several reports say Steam users gained access to preload files and that these files were then shared and spread via file-sharing and piracy sites, where the game is already being distributed and described as cracked. The leaked build is reported to be large, around 155GB in multiple accounts.

Playground Games addresses the incident, stating the leak is not the result of a preload issue, and it warns players against downloading or using the leaked version. Sources also report that Playground threatens enforcement actions, including franchise-wide and hardware bans for those playing pirated copies. While some outlets note the game appears to be gaining traction commercially despite the leak, the core details across coverage are that the unencrypted Steam files were obtained early, distributed widely online, and prompted official warnings from the developer ahead of the scheduled launch.