You need the full game files (FitGirl, DODI, or ELAmigos releases). Do not use an old repack from 2022.
You generally cannot play with people who own the legitimate version of the game unless they also apply the crack to their files. how to play multiplayer cracked games new
This is currently the most popular method. It involves replacing a game's Steam API files with a modified version that "spoofs" a legitimate game ID. Often, the cracked game identifies itself to Steam as "Spacewar"—a technical demo used by developers for testing Steamworks features. This allows players to use the official Steam invitation system to join friends who are also using the same fix. You need the full game files (FitGirl, DODI,
These fixes modify game memory. Windows Defender will flag them as "Win32/Wacatac" – add an exclusion to your game folder. This is currently the most popular method