These builds are often outdated. Official versions on Steam or Xbox receive frequent "Update" patches (like the Curveball update) that add significant new gameplay features and bug fixes not found in older builds.
Melee and firearm combat are weighty and satisfying. You have to balance noise levels; firing a loud gun will attract a "horde" or a "Freak" (specialized zombies like the tank-like Juggernaut or the lethal Feral). These builds are often outdated
Playing "online" with unofficial builds usually requires specific workarounds or private servers, which are often less stable and have smaller player bases than the official Xbox/Steam matchmaking. Is it worth playing? These builds are often outdated