Board Game Arena

I’m trying to play this with someone else who does not have premium, however every time I start the game I’m always the shark.

Is there any way for me to choose to play the octopus?

I understand it’s in beta right now and that may not be possible, but just wondering still.

I also think it would be a good thing to have the option to choose sides. Could be a toggle when setting up the game. Assigned/random role.