Sonic 4 Episode I APK + MOD v1.5.0 (All Episodes Unlocked, Infinite Rings, In-App Purchases Free, Ads Disabled)

Sonic 4 Episode I Mod is a 2D side-scrolling platformer developed by Sega. It is a direct continuation of the original Sonic the Hedgehog series, designed for mobile devices. The game targets players familiar with classic Sonic mechanics, requiring precise timing and fast reflexes to navigate loop-de-loops and enemy encounters. The core loop involves running through zones, collecting rings, and defeating Dr. Eggman.

What This Mod Unlocks

• All four main episodes (Splash Hill Zone, Casino Street Zone, Lost Labyrinth Zone, Mad Gear Zone) are unlocked from the start.
• Infinite rings are enabled, preventing the player from losing them upon taking damage.
• The in-app purchase prompts to unlock episodes are removed.
• The game's premium barrier is bypassed, granting full access without monetary transaction.

The mod activates automatically upon launching Sonic 4 Episode I Mod. No mod menu or specific tap sequence is required. The unlocked episodes appear selectable on the main stage map. The infinite rings feature is always active during gameplay.

This mod for Sonic 4 Episode I Mod requires Android 2.2 or higher. It does not require root access. The installation file is approximately 38 MB, with additional data download likely upon first launch.

Installation Steps

1. Download the modded APK file for Sonic 4 Episode I Mod.
2. Enable installation from unknown sources in your Android device's security settings.
3. Open the downloaded file to begin the installation process.
4. Launch Sonic 4 Episode I Mod after installation completes.

Known Edge Cases

• Leaderboard functionality may be disabled or may not sync correctly due to the modified game state.
• If the app data is cleared, the unlocked episodes persist, but game progress like completed acts resets.
• On some newer Android versions, a compatibility warning may appear at launch; this does not affect gameplay.
• The mod is designed for the single-player campaign. Any online features are untested and may cause instability.