Step 4: Pick a character and tell all your friends to also pick the characters they want and don’t leave the starting room. Don’t forget to turn off the debug console once you get back to singleplayer as you won’t get achievements! Leaving the launch options as is won’t make a difference on your progress though, you can keep it. Step 3: Everyone who will be playing co-op has to do these two steps, not just the host.
Within the ini file, find “EnableDebugConsole=0” and turn its value to 1. The options.ini is in your Documents/My Games/Binding of Isaac Repentance folder. Step 2: Go to the options.ini, you need to enable developer console for co-op, sadly this also means no achievements during co-op play for now. On the launch commands, enter –networktest. Step 1: Go to Properties by right clicking on Binding of Isaac Rebirth on Steam. So please be patient, this will be released for real later! But if you are not patient like me, here is how you can play with up to 4 people! How-To Guide
The new netcode introduced to the game comes with Repentance and the developers hope to continue this project sometime after the Void rework is done. Before we start this short guide you need Repentance to do this.
