This repo contains autohotkey enabled executable files to launch Sparc in custom arenas
In Steam -> Games Menu -> Select "Add a non Steam game to my Library"

Browse to the location of the AutoHotKey executables to add them to your Steam library

Check the box next to the game(s) and click "Add Selected Programs"

Now you can launch the locally installed games from Steam direct to the custom arena.
Note: If you have not installed the game into the correct directory, this will fail. Extract your archive into C:\Sparc

