Hi folks! IsThereAnyDeal.com is a price tracking website for PC games that allows users to make custom watchlists – so I made a list just for shmups. It’s probably missing a couple games here and there (and it deliberately doesn’t include twin-stick or rail shooters just out of laziness), so feel free to let me know if there’s anything that’s missing!
I also did a shmups-only list on Deku Deals (for console games): https://www.dekudeals.com/wishlist/7b7d4wdkn3