OPG: Summit War is a game that combines turn-based combat and squad-building elements. The game has a great character system, providing hundreds of super cool skills, as well as many new features such as monsters, bonuses, haki for players to improve attack power, resistance and recovery capacity. and character speed, while immersing yourself in the characters' achievement. many territories, capture many resources and become the strongest captain in the Grand Line!

// Option A //

To download OPG: Summit War mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download OPG: Summit War mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download OPG: Summit War from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search OPG: Summit War in HappyMod App.