I'm writing a silly open / free game in MonoGame, and I've got LAN broadcasting in for broadcasting open game lobbies that a player could join via local network; but I'd like to also support something similar via the internet.
It's a simple client / server model action game using UDP, nothing super complicated going on. The library I'm using supports punching holes in NAT via UPNP so, that's not a big deal for me. -- I'm just wondering if there's any free services out there (maybe something with an HTTP based REST API) that I could use to post open games to, so that players could connect and join to them.
(I don't mind writing my own and throwing it up in Azure but I'd rather not waste my time and money if there's something free out there.)