Open Net Battle (ONB for short) is a moddable, online, 2D game engine and tools. "Run your own network" with others or create your own content and stories to share.

It is maintained by talented people.

DOWNLOADS#

The latest client is 2.1.6a. See the CHANGELOG.

The latest server version is 47.

Expand the operating system you want to play on below:

SteamDeck

ONB on SteamDeck

Details

Installing

To install, run

flatpak install ./net.frameskip.OpenNetBattle.flatpak
Controls

After launch, bind your joystick in the Config screen by entering the PET menu.

Mods Installation

The game comes pre-packaged with NO mods.

Add your mods in ~/Games/OpenNetBattle/resources/mods/.

Android

ONB on Android

*The android port is currently maintained by a third party. Quality and experience will vary.

Details

Installing

To install, download the APK and tap on it to begin the install.

Minimum Specs
  • Android: 6.0
  • OpenGL ES: 2.0
Controls
  • Move: Swipe from the left side of the touchscreen
  • Confirm/A button: Just tap once from the right side
  • Cancel/B button: Instead of tapping once from the right side, do a swipe motion towards the left
  • R shoulder: Tap the right corner of the screen
  • L shoulder: Tap the left corner of the screen
  • Start/Pause: Tap the top middle part of the screen
  • Escape: Swipe down 3 times from top middle part of the screen
Mods Installation

The game comes pre-packaged with very basic mods. To upload your own, please drop them in sdcard/Android/media/net.frameskip.opennetbattle/OpenNetBattle/resources/mods.

All Linux Distros

ONB on Linux

Details

Installing
flatpak install ./net.frameskip.OpenNetBattle.flatpak
Controls

After launch, bind your joystick in the Config screen by entering the PET menu.

Mods Installation

The game comes pre-packaged with NO mods.

Add your mods in ~/Games/OpenNetBattle/resources/mods/.

Windows

Details

Installing

To install, simply download and extract the ZIP file. Double click on the executable to play.

Controls

After launch, bind your joystick in the Config screen by entering the PET menu.

Mods Installation

The game comes pre-packaged with NO mods.

Add your mods in the resources folder next to the executable ./resources/mods/.


Last updated: 2026-07-07


Tip

First time playing? Expand these tips:

Watch this video by ShaDisNX255.

Download player mods.

Visit MODS to download mods.

FEATURES#

Explore

Explore

Build Folders

Build Folders

Upgrade Stats

Upgrade Stats

Meet Characters

Meet Characters

Make Friends

Make Friends

Custom Battles

Custom Battles


BlueSky | GameJolt | Real PET | X
ONB 2.1 Logo