Board Game Arena

I obviously started FOUR turn based games when I did not know what I was doing. How do I get out??? Thank you!

Explain the situation to your opponent and propose to cancel the game: hamburger menu top right of the screen, "Propose to abandon the game collectively". This will cancel the game without any point penalty.
Do not click "concede the game", as it makes you lose the game and points.

Or, you can play them

ok, thanks again, yes, 3 were kind and good sports to abandon. I'll be more careful when "play now" if on turn based every game becomes turn based ???.

I'm not sure with the new interface, but previously you could absolutely start multiple turn-based games in parallel for simple games. It's probably still doable now, although when I click on "play", it becomes a "cancel" button.
Anyway, anytime you click on "play", a new game is open.