Oh so Zandronum 1.0 was released like a week ago or something, I’ll work on moving over to that soon. (This was only tested with Skulltag, not that it should make a difference.)
About: A portal gun for Doom. Works in multiplayer.
Protip: Don’t forget to set up your controls.
Compatibility: Doom I or II, Skulltag(/Zandronum). It also seems to work in ZDoom.