This game has a few technical problems, particularly with the camera sometimes not scrolling down/up and locking when you've got multiball, some very strange framerate issues where there is a noticeable dip in the animation speed, and can often be a little finicky with crashing when you've played a while. Design wise I think it mostly succeeds, though losing 1000 points per tick for not collecting gems in a while sucks and grinding for points to get achievements can get pretty tedious when going for gems in lower areas can be risky. It's also pretty easy to lose your ball from certain trajectories in the bottom screen, so you'll often have to lose points via bumping to ensure you don't get screwed out of an early ball. I think it's an alright pinball game that's not too ambitious, but it wears you down after a while and isn't the most entertaining title out there.