Games like Super Killer Hornet: Resurrection
Games like Super Killer Hornet: Resurrection include Sky Force Reloaded, Vampire Survivors, LUFTRAUSERS, BALL x PIT, and Revolution Ace. We matched them by the tags players give Super Killer Hornet: Resurrection on Steam (Indie, Shoot 'Em Up, Bullet Hell, Arcade, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Vampire Survivors
Shared: Bullet Hell · Indie · Singleplayer

LUFTRAUSERS
Shared: Indie · Bullet Hell · Arcade

BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up

Revolution Ace
Shared: Shoot 'Em Up · Indie · Bullet Hell

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Indie

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Indie

Waves
Shared: Shoot 'Em Up · Bullet Hell · Arcade

ZeroRanger
Shared: Indie · Shoot 'Em Up · Bullet Hell

Megabonk
Shared: Indie · Bullet Hell · Singleplayer

Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Cube Destroyer
Shared: Indie · Shoot 'Em Up · Singleplayer

Nex Machina
Shared: Bullet Hell · Indie · Arcade

Brotato
Shared: Bullet Hell · Singleplayer · Indie

Cyberhunt
Shared: Indie · Shoot 'Em Up · Arcade

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Singleplayer

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Indie · Bullet Hell · Shoot 'Em Up

I Am Legion: Stand Survivors
Shared: Bullet Hell · Shoot 'Em Up · Indie

Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Touhou Kikeijuu ~ Wily Beast and Weakest Creature.
Shared: Indie · Bullet Hell · Shoot 'Em Up

UBERMOSH Vol.5
Shared: Indie · Arcade · Bullet Hell

Exit the Gungeon
Shared: Indie · Arcade · Bullet Hell