so i've been catching up on a lot of old-school, arcade-style shoot-em-ups lately and have really taken to the genre in a way i never did before. i had played gradius and r-type before, but lately i've tried all of the treasure stuff (bangai-o and ikaruga in particular) and some more left-field master system stuff like the fantasy zone games, as well as western stuff like geometry wars, and i think i finally know what love looks like:

but i'm actively looking for recommendations, doesn't matter whether it's top-down/vertical-scrolling or side-scrolling or isometric or whatever, i want some shmups. go!!