Single screen multi-player

[Hikikomori 0]

Certain games can be used in local co-op by adding a controller or by  faking a controller using emulators like VJoy.  Might be helpful.  Although some games will become useless with the software, like  Tiny and Bigs in grandpas leftovers.  The view will just spin to the left constantly unless you detach the controller or uninstall the emulator software.  Happens even if the software is not running.