On the one hand, one line in the jam description says "You can also ask questions about Firebase, Godot, life in general..." and the jam is being run by the creators of GodotFirebase. On the other hand, nothing else mentions Firebase at all. So... is the idea to build Godot games that use Firebase? Or to build Godot games and we don't have to use Firebase at all? :-)

No! I decided against it - this jam is for the community and the engine. Thanks for asking though - a lot of people have come to the server wondering, too!