A new game mode exclusive to v117. You fight 50 consecutive shinobi on a single health bar. Rewards include unlocking "Final" skins (e.g., Naruto with the broken Truth-Seeker Orbs).
Since this is a modified version (Mod APK), you won't find it on the Google Play Store. Here is how to get it running: naruto senki final mod by riicky v117 apk adadroid top