Very fun so far, a couple of bugs: In endless, when transitioning to the shop, the roulette wheel kept on spinning even when I bought a new spinning handle and clicked the lever to go to the next level, and the wheel kept on spinning on without stopping.
The other bug was before I beat the main game, and the last ball of a group of I think 5 seemed to hit a ball or the geometry of the tunnel weirdly and went BACK up the tube to the start, however after several moments the balls that went down still calculated so it was fine if unfortunate.