Got basic bridging to work. For now the FreeGameDev/General channel on our Mattermost team chat is linked with our #freegamer IRC channel on freenode. Feedback welcome

Next it should be easy to link it to the open-source games Discord channel, but I first need to figure out how bot accounts on Discord work.
Anyone got a suggestion for other places to link? Sadly Steam chat is currently broken with Matterbridge, but I think a Matrix.org channel would work.
I am also still contemplating how to best link with XMPP. Matterbridge also supports it, but these Bot bridges are a bit of a band-aid and I would rather have a proper gateway. The easiest might be to enabled matterircd and joint this pseudo IRC channel via the Biboumi XMPP to IRC gameway that we have already running.
Edit: #opengameart on freenode IRC is now bridged to the opengameart channel on the team chat.