Games like Pandora
Games like Pandora include Nova Drift, Megabonk, Brotato, BALL x PIT, and ODDCORE. We matched them by the tags players give Pandora on Steam (Arena Shooter, Bullet Hell, FPS, Shoot 'Em Up, and Bullet Heaven): closest matches first, and among equally close ones the better-known games.

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arena Shooter

Megabonk
Shared: Bullet Heaven · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Arena Shooter · Bullet Heaven

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

ODDCORE
Shared: Arena Shooter · FPS · Bullet Hell

Deadzone: Rogue
Shared: FPS · Roguelite · Roguelike

Deep Rock Galactic: Survivor
Shared: Bullet Hell · Bullet Heaven · Roguelite

Vampire Hunters
Shared: FPS · Bullet Heaven · Bullet Hell

Soulstone Survivors
Shared: Bullet Hell · Bullet Heaven · Roguelite

Half-Life: Alyx
Shared: FPS · Shooter · VR

Swarmlake
Shared: FPS · Bullet Hell · Shooter

Time Wasters
Shared: Bullet Hell · Bullet Heaven · Arena Shooter

Devil Daggers
Shared: FPS · Arena Shooter · Shooter

Bloodshed
Shared: FPS · Bullet Hell · Arena Shooter

Gunfire Reborn
Shared: FPS · Roguelite · Roguelike

Roboquest
Shared: FPS · Roguelite · Shooter

Halls of Torment
Shared: Bullet Hell · Roguelite · Roguelike

The Spell Brigade
Shared: Bullet Hell · Bullet Heaven · Roguelite

Rogue: Genesia
Shared: Bullet Hell · Bullet Heaven · Roguelite

Vampire Survivors
Shared: Bullet Hell · Roguelite · Roguelike

Echo Point Nova
Shared: FPS · Arena Shooter · Shooter

DOOM
Shared: FPS · Shooter · Action

VOID/BREAKER
Shared: Bullet Hell · FPS · Roguelite

Call of Duty®
Shared: FPS · Shooter · First-Person