Games like Touhou Library Survivors
Games like Touhou Library Survivors include Vampire Survivors, BALL x PIT, 20 Minutes Till Dawn, Megabonk, and Death Must Die. We matched them by the tags players give Touhou Library Survivors on Steam (Action Roguelike, Bullet Hell, Action, Shoot 'Em Up, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Casual

BALL x PIT
Shared: Action · Bullet Hell · Action Roguelike

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

Megabonk
Shared: Action Roguelike · Bullet Hell · Action

Death Must Die
Shared: Action Roguelike · Bullet Hell · Action

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Action Roguelike

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Action

Time Wasters
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Action RPG

Apocalypse Party
Shared: Action Roguelike · Casual · Bullet Hell

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Roguelike

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Action

Beautiful Mystic Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Action

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · Action RPG

Twilight Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Skul: The Hero Slayer
Shared: Action Roguelike · Action · Indie

Noobs Want to Live
Shared: Bullet Hell · Action · Action Roguelike

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

Rabbit and Steel
Shared: Bullet Hell · Action Roguelike · Anime

Goobies
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Yet Another Zombie Survivors
Shared: Action Roguelike · Top-Down Shooter · Action RPG

Arms of God
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter