bridge

Hi, anyone here knows how to bridge chat applications such as slack, discord, signal, pidgin, imessage, etc to matrix / XMPP / Riot? I would love to hear from anyone who knows how.

So basically i need to integrate games like ( chess, bridge, Hearts ) in my own site. So when my users feel like playing chess they can... I know people will have to either log in in the chess platform ( or they will have to link their account previous to this ), but my attempts to find...