Stick to well-known community modders rather than random "free download" sites that may bundle adware with their links. Alternative: Cloud Gaming
Because these are unofficial files, always scan the APK with a mobile antivirus before installing. Additionally, remember that these projects are for personal entertainment; supporting the official Naruto franchise by playing the licensed games on PC or console remains the best way to help the creators. i naruto shippuden ultimate ninja storm 4 mugen apk free
The concept of a "Naruto Storm 4 MUGEN" refers to a community-driven project rather than an official release by Bandai Namco What is M.U.G.E.N? Stick to well-known community modders rather than random