Ok, this is 5 star using on the theme! Really great! Love the idea and honestly I thin that can have great potential! Keep working on it, I think it can be a great mini game that people really enjoy playing. I think it can definitely use some better UI, like display exactly what the player has won from the wheel, show some damage popups, etc. Music and Sound FX of course and add more complexity and increasing difficulty to the boss. Before the first round of upgradesthe boss felt a bit hard. After the 5th round of upgrades the boss felt super weak and I kill him in like 5 seconds. So needs some balancing. Again, great job, keep at it!
Would love it if you can play test and review my submission as well, thanks!