Got gifted a copy of Elden Ring Nightreign, but found that when using the seamless coop mod (for 2 player games), the deck controls would no longer work.
Anyways it turns out the solution is to set this as the launch options for the seamless mod executable:
SteamAppId=2622380 SteamGameId=2622380 SteamOverlayGameId=2622380 %command%
This makes the coop launcher be identified as the game itself, preventing any steam input issues. Note: if you seemingly get stuck on a steam loading screen after launching the game like this, you may just need to press the steam button and swap windows to the game.
Nightreign (to be clear, “ELDEN RING NIGHTREIGN” is the actual official name)
This same workaround is possibly needed for the seamless coop mod in the original Elden Ring as well, but the app ID would need to be changed to match that game.
So for original elden Ring the launch option would probably be:
SteamAppId=1245620 SteamGameId=1245620 SteamOverlayGameId=1245620 %command%
I’m just confused why there is a coop mod for a inherently coop game. What does it do for nightreign?
Nightreign only supports 1 or 3 player modes, the mod lets you play with just two players.
As a somewhat busy adult with work and kids, finding time to play together with friends is kinda hard. We have some set times a week where we try to play together (but we have more than 3 players) and we often squeeze in 2 player game sessions when possible. Nightreign only supporting exactly 3 players for multiplayer didn’t really work for us.