It's a decent bowling sim. The story cutscene is really fun. I like the upgrades, though I wish there was some sort of upgrade randomization so it wasn't just the same set of upgrades (besides the vending machine) every time. I saw upgrades for adding multipliers when you use different bowling ball types, but I'm not sure how you get those different types.
The game got a little glitchy once I made my ball bigger and added more pins, the ball started hopping into the air as it approached the pins and there were a couple rounds where the ball seemed to phase right through the pins?