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enter personal data or payment info inside these fan games.

The refers to various fan-made 2D fighting games built on the MUGEN engine for Android. These "Ultimate Edition" or " Storm Connections

Naruto MUGEN 200 Characters APK: The Ultimate Fighting Experience on Android

MUGEN on Android relies on : virtual joystick + 4–6 attack/special buttons (punch, kick, strong attack, shuriken, chakra, summon). You can usually remap them.

Because these are community-made projects, you won't find them on the official Google Play Store.