Split-screen on PC

Sonic Robo Blast 2

Up to 32 players on one PC, with controllers or keyboard and mouse.

32Verified handler

Handler “Sonic Robo Blast 2” by Talos91, version 3

P4+28 more players

What works

With Nucleus Co-op, up to 32 players can play Sonic Robo Blast 2 together on one PC, each in their own part of the screen, with controllers or keyboard and mouse. The free community handler “Sonic Robo Blast 2” by Talos91 does the setup and was checked by hub moderators: version 3, updated 8 Sept 2025. Sonic Robo Blast 2 is a platformer, adventure and indie game from 2006.

Players32
ControllersSupported
Keyboard and mouseSupported
Several keyboards and miceNot supported
Hub moderatorsVerified

How to play Sonic Robo Blast 2 split screen on PC

Get Nucleus Co-op
Download Nucleus Co-op, free for Windows 10 and 11, and unzip it into its own folder, for example C:\NucleusCo-op. There is no installer.
Keep it out of Program Files, your user folder and OneDrive.
Download Nucleus Co-op
Install the Sonic Robo Blast 2 handler
In Nucleus Co-op, search the Hub for Sonic Robo Blast 2 and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where Sonic Robo Blast 2 is installed.
Download the handler file (.nc)
Take a seat
Each player presses a button on their own controller to join and takes a spot on the screen. Pick a layout that fits your players.
Launch and connect
Press Launch: Nucleus opens one copy of Sonic Robo Blast 2 per player and lays the windows out on your screen. Then link them in game, usually one player hosts a LAN or online session and the others join it. The handler notes say how.

What you need

A Windows 10 or 11 PC
Nucleus Co-op runs on Windows only. System requirements
Sonic Robo Blast 2 for Windows
Installed on that PC. Nucleus starts every player's window from that one install.
Nucleus Co-op, free
With .NET Framework 4.7.2 or later and the Visual C++ 2015–2022 runtimes (x86 and x64). Download
Something to play with
One controller per player; one player can use the keyboard and mouse. Controllers
A PC that can run 32 copies
Each player runs their own copy of Sonic Robo Blast 2, so the PC carries several times the usual load. Lower the graphics settings if it struggles. Performance tips
A multiplayer mode
Nucleus links the windows through the game's own LAN or online mode; the handler takes care of it.

Handler notes

Tested and working with v2.2.15: https://www.srb2.org/download/. Download the portable zip with the full game. The game already has native split-screen for 2 players max but with this you can play with 4+.
Read the FAQ if you have any further questions and want to know more about Nucleus Co-op.
Handler by Talos91. Support the Nucleus Co-op team if you love the project.

About Sonic Robo Blast 2

Sonic Robo Blast 2, abbreviated as SRB2, is a fan game for Windows and DOS platforms. It is a 3D platformer developed by a group called Sonic Team Junior, using a modified version of the Doom Legacy source port of Doom, to allow for such things as optional analog control and true room-over-room (something not possible in the standard Doom engine), as well as the standard gameplay elements Sonic games are known for. It has been in the works since 1998 and is currently nearing completion, though several parts of the game are still missing. Sonic Robo Blast 2 is closely inspired by the original 2D Sonic games for the Genesis and attempts to recreate a game with this style in 3D, though it also borrows elements from the current Sonic games, such as Sonic's signature Air Spin Attack. Entirely original to SRB2 is its Multiplayer mode, a variation of classic first-person shooter games with Sonic elements. Due to being built with a modified Doom Legacy engine, the game is also very easily customizable. Custom levels, characters and even source code modifications can be created with the help of external editors.

Summary from IGDB

Sonic Robo Blast 2 screenshots

Version history

v3Current
sdl2 line for Nucleus 2.4.0, controllers are no longer inverted.
8 Sept 2025VerifiedDownload (1.4 KB)
v2
Updated to work with the newest v2.2.13 version of the game.
22 Feb 2024VerifiedDownload (1.4 KB)
v1
first Release
25 Dec 2020VerifiedDownload (1.2 KB)