Hello, 

I can't find the way to host and join game in Hullabazoo game. I've tried on several devices, connected by Bluetooth, but it doesn't work. 

I really don't know what to... 

If you mean this game, comments are open. Please ask the creator directly, this category is for help with Itch.io, not any one game.

Yes, it's this game. But I thought it was related to itch.io, sorry for that.