Sonic 4 Episode II v1.9 Download Free Mod APK for Android

Overview

Name	Sonic 4 Episode II
Updated	2017-08-18
Last version	v1.9
Size	8 M
MOD	All Episodes Unlocked, All Characters Unlocked, In-App Purchases Free, Ads Disabled
Price	Free

MOD Features +

All Episodes Unlocked, All Characters Unlocked, In-App Purchases Free, Ads Disabled

Download Sonic 4 Episode II [NaN undefined]

Sonic 4 Episode II Mod is a 2D side-scrolling platformer developed by Sega. It is a direct sequel to Episode I, continuing the story of Sonic and Tails against Dr. Eggman and Metal Sonic. The game is designed for fans of classic Sonic mechanics, featuring high-speed stages, loop-de-loops, and cooperative play via local Bluetooth. This mod APK provides access to the complete game content without the standard purchase requirements.

What This Mod Unlocks

All episodes and zones are unlocked from the start.
All playable characters, including Sonic and Tails, are available without progression.
The in-app purchase system to unlock content is bypassed.
No advertisements or promotional pop-ups are present.

The mod functions by patching the game's internal license verification and store call routines. This allows the app to treat all locked assets as owned. The modification is applied to the core game logic, not just the menu interface.

Activation Note

No activation is required. Upon launching Sonic 4 Episode II Mod, the main menu will display all episodes as playable. The character select screen will also show all options available immediately. There is no mod menu or toggle to enable.

Requirements

Android 3.0 or higher is required. The APK file size is approximately 8.4 MB. Installation will require roughly 150 MB of free storage for game data and cache. Root access is not required.

Install Steps

Download the Sonic 4 Episode II Mod mod APK file.
Enable "Install from Unknown Sources" in Android security settings.
Open the downloaded file using a file manager.
Tap "Install" and wait for the process to complete.
Launch the game from your app drawer.

Known Edge Cases

Bluetooth cooperative play functions normally, but both devices must have the same mod version to prevent sync errors.
Clearing the app's data or cache may reset high scores and save files, but unlocked content remains.
On some Android 12+ devices, a one-time "Install anyway" prompt may appear due to the APK's target SDK; this does not affect functionality.
Official game updates from the Google Play Store cannot be installed over this mod; a fresh install of a newer mod version is required.