Split-screen on PC

The Red Solstice

Up to 8 players on one PC, with keyboard and mouse or several keyboards and mice.

8Verified handler

Handler “The Red Solstice” by birden, version 1

P4+4 more players

What works

With Nucleus Co-op, up to 8 players can play The Red Solstice together on one PC, each in their own part of the screen, with keyboard and mouse or several keyboards and mice. The free community handler “The Red Solstice” by birden does the setup and was checked by hub moderators: version 1, updated 15 Jan 2026. The Red Solstice is a shooter, role-playing and strategy game from 2015.

Players8
ControllersNot supported
Keyboard and mouseSupported
Several keyboards and miceOne per player
Hub moderatorsVerified

How to play The Red Solstice 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 The Red Solstice handler
In Nucleus Co-op, search the Hub for The Red Solstice and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where The Red Solstice is installed.
Download the handler file (.nc)
Take a seat
Each player joins with their own keyboard and mouse and takes a spot on the screen. Pick a layout that fits your players.
Playing with several keyboards and mice? Press End once everything is in place to give each window its own cursor.
Launch and connect
Press Launch: Nucleus opens one copy of The Red Solstice 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
The Red Solstice 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 keyboard and mouse per player. Controllers · Keyboards and mice
A PC that can run 8 copies
Each player runs their own copy of The Red Solstice, 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

Start your main game once for config files to get created.

Horizontal split has menus cut off, so better to avoid it (mainly when exiting a match).

About The Red Solstice

8-player co-op strategy/RPG set on Mars during The Red Solstice In The Red Solstice you control one of the eight space marines that are trying to find out what happened to human colonies on Mars during the huge storm called The Red Solstice. The mix of a dark and gritty Science Fiction setting and addictive adrenaline filled gameplay - based on advanced tactics and quick decisions at the same time - makes for a great atmosphere and gameplay experience.

Summary from IGDB