Tried to play NTT with two other friends. Selected 3p local, but their controllers weren't responsive when they connected via steam remote play together feature. Does this work with the NTT mod to simulate local coop?
An online multiplayer mod for Nuclear Throne. · By
It should work, though you may need to use /gamepad2 X and /gamepad3 Y (via chat; where X, Y are controller numbers 1 to 12) to map controllers - Steam Remote Play Together is known to sometimes put gamepads in unusual slots or not put them anywhere at all (check the popout window to verify that each player's gamepad is recognized)