
In other words, it is now much easier to play multiplayer thanks to the Steam lobby system which now replaces the old system.
It is still possible to play with UPNP to open ports but the servers will not appear in the server list and will have to be connected to via IP.
I'll let you discover in game :)
Note: Work on single player content is still in progress, the first thing available will probably be an arena mode with infinite wave of enemies and a leaderboard.
JMP leaderboards will be available with the next JMP maps.