We implemented a new matchmaking system which should allow players to now host without port-forwarding. The downside? No private games (at least not until we figure out a way to do them), until then, it should be much much easier to play online with other players.

PATCH 3.08

• All new matchmaking system
• Steam Networking API integration (no more port-forwarding req.)

[EDIT]:
PATCH 3.09

• Added private lobby functionality
• Fixed a bug with joining PvP games
• Fixed a bug with Ice Wall

Enjoy!
-Yeti Trunk