Currently on a quest to play all the other casino-based games from the jam...
This was heaps of fun - kept me playing for quite awhile. Lucky I avoid slot machines in real life, because that one had me hooked. All the different rolls were really interesting and kept me coming back. Not sure if it was bugged, but had some trouble with the 'bubbles' one - is it meant to have extremely short range? If so maybe a clearer visual indicator that they're popping or something would help that ability along.
I really liked it though - lots of depth and interesting boss behaviour. As others have said, a bit of sound would make it pop, but all up a great entry I think.