Games like Nova Swarm
Games like Nova Swarm include Nova Drift, Bit Blaster XL, BALL x PIT, Vampire Survivors, and Planes, Bullets and Vodka. We matched them by the tags players give Nova Swarm on Steam (Shoot 'Em Up, Bullet Hell, Arcade, Roguelite, and Score Attack): closest matches first, and among equally close ones the better-known games.
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade
BALL x PIT
Shared: Arcade · Bullet Hell · Roguelite
Vampire Survivors
Shared: Bullet Hell · Roguelite · Arcade
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade
LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Arcade
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Furi
Shared: Bullet Hell · Shoot 'Em Up · Boss Rush
Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Roguelite
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Arcade
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Greedland
Shared: Shoot 'Em Up · Bullet Hell · Roguelite
Waves
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Chippy
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Jets'n'Guns Gold
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Swarmlake
Shared: Arcade · Bullet Hell · Shooter
Megabonk
Shared: Roguelite · Bullet Hell · Arcade
Deep Rock Galactic: Survivor
Shared: Bullet Hell · Roguelite · Arcade
Savant - Ascent
Shared: Shoot 'Em Up · Bullet Hell · Score Attack
Steredenn: Binary Stars
Shared: Shoot 'Em Up · Arcade · Bullet Hell
Touhou Kinjoukyou ～ Fossilized Wonders.
Shared: Shoot 'Em Up · Bullet Hell · Arcade