Incredible game! Feels like a great cross between an auto battler and brick breaker. I like the variety of ball types and the general game loop and visual spectacle of the arena fight, though I wished there was a way to sell/delete some balls to make space to stack some higher tiers (if there was a way I sadly couldn't find it).
Very enjoyable!
Edit: Finally saw the end (multiple predator balls are very strong). Still had a lot of fun with it!