I shall speak truth to power and say game is passive slot machine clicker. I realise not really cause u got to keep hitting the green bar that I am failing so it does depend on skill. XD
In terms of theme 100%, in terms of creativity, not so much though ;)
Beyond that Visuals and audio is super polished. My only advise is to slap a theme on it with the spin or some weird story, think street fighter jewel jam or something like that. Give people something else to do rather than just spin