: Includes classic Arcade and Versus modes, along with Training and special boss battles.

: Always ensure you are downloading from a trusted source, such as the Team One Piece Mugen OS Blog . Some users report "false positive" virus warnings from Windows Defender due to the way fan-made executables are signed, but community members generally attest to its safety when sourced directly from the creators.

The game is primarily developed by . Because it is a community-driven "fan game" and not an official release, it is typically distributed via third-party repositories or developer blogs. Platform : Mainly designed for Windows PC .