While there is no formal academic "deep paper" published for Palworld version 0.1.5.1
Sites like Internet Archive , SteamUnlocked (not recommended), or private modding forums sometimes host packaged versions of 0.1.5.1. These files are not verified. They can contain malware, false antivirus positives, or corrupted assets. Only use if you have a sandboxed environment. Palworld 0.1.5.1 Older Versions for Windows