[REQUEST] High-down Damaku/bullet-hell suggestions please

To be clear I imply this model of sport. This display shot is from "Wing Fighter" however the p2w curve is simply too steep for me. The development on f2p is agonizingly sluggish.

I need a sport with incremental enhancements even when taking part in ranges many instances however improve forex is retained.

I'd a lot desire a sport with minor IAP than outright buy, I simply don't like shopping for a sport and never liking it. Would a lot fairly strive a free model and pay to take away adverts or no matter later.

Thanks