Really great plinko style game! Love the unique mechanics you've added in. I thought it might be interesting if you played both sides. On the "creatures turn" you see them going back and forth across the top and you press to release their pinball (which could also be cycling through different styles). This would allow them to attack and add a partially random partially slot style skill to the game. I think the tension of watching the pinball drop and damage adding up against yourself could be exciting. This would of course take the place of the X damage after X turns. Storywise it could make sense like you two are battling and you make a certain move or choice which leads to X damage against yourself.