It most likely refers to a PC game from the early-to-mid 2000s titled Extreme Racing (or a similar racing title).

Files from old pirate releases are frequently bundled with trojans, miners, or adware by third parties.

Users asking for help with technical errors (like missing .dll files) specifically related to the DARKZER0 version of a game. ⚠️ Security Warning

The string "Extreme.racing-DARKZER0.rar" typically refers to a released by a "warez" scene group known as DARKZER0 . Based on the naming convention, 1. The Likely Content

Old lists of "scene releases" that cataloged every game cracked by specific groups.

Releases from this era (often 32-bit) rarely work natively on modern Windows 10/11 systems without extensive patching or emulators.