It looks…OK?
I mean, it doesn’t look bad in any sense…but I’m not super impressed by it…
Are the sprites and art all yours? They’re pretty good I guess. I like your icon too, very old fashioned.
I just know I’ve seen shmups from the Sega Saturn era that looked much more visually impressive…and they had to develop on Sega Saturn!
The backgrounds feel kinda…empty and 2 dimensional. Theres nothing for scale to create a sense of paralax. Most of the time it looks like you’re just sitting still and the ships are just coming to you, it doesn’t feel like you are flying towards the ships or fighting in air/space. You have a million ships shooting a million bullets each, and it still feels visually boring somehow.
The fact that the player ship is also super small on screen doesn’t allow you to really see detail on it’s design, In a way, I feel like it could be easy to lose track of the ship in all the chaos. It should be shiny and bright and easy to distinguish from the background and the enemy ships.
Also…maybe you didn’t show it off in the trailer, but I feel like it’s a little bland in terms of mechanics, I see no crazy missles or super lasers or bombs or addtional types of powerups besides just the regular blaster. If they were shown, I didn’t really notice them. Shmups have been around for a long time, so the mechanics have had a while to evolve. In general thats the reason there aren’t a lot of shmups these days, because in the mid 90s, EVERYONE was making them, like, think FPS games about 6 years ago, times 10. I think pretty much every gimmick you can think of for a shmup has already been done. Even flying penguins fighting giant pandas doing ballet. Look up Parodius. It’s real.
Look at the game Rayforce (also known as Gunlock or Layer Section depending on your region), it was possibly one of the best looking 2D shmups in existance, I think it still even holds up by today’s standards. It has less ships on the screen, but the screen is way more visually interesting because these guys killed it on the paralax effects and made it look amazing. The effects they use like having massive objects like giant asteroids and massive warships in the background give you a sense of scale, and the stuff below you like the little landers on the space rocks and turrets on the big ships shooting up and you and you shooting down at them give you an illusion of 3 dimensional space. And the secondary locking laser weapon looks super cool and gives you more options.
But there are a lot of others you should probably research too, a lot of ideas have been done that you just seem to not be using. Right now your game is just sideways moving Galaga with a grittier aesthetic. Give it something to make it feel unique. And make it more visually exciting.