The official UNS4 had roughly 100+ characters (including variations). This Mugen build often exceeds that. Because the Mugen community is decentralized, many versions of this APK include:
For those looking for the authentic console version on mobile without an emulator, cloud platforms like the Star Park Cloud Gaming App allow you to stream the actual PC game directly to your phone. The official UNS4 had roughly 100+ characters (including