Really cool idea! Although without a way to remove pegs, kinda transitions more into an idle game once the board is populated since you can't transition to new strategies. Also think it could perhaps benefit from having more pegs in general? Often it feels like if I don't stop it at the top row the balls have a pretty good chance of not hitting anything else.
All in all though, it runs smooth, like the synergy between different pegs like ice and turret. Would like to see more!