Games like Last Castle Guardians
Games like Last Castle Guardians include Vampire Survivors, Megabonk, 20 Minutes Till Dawn, Hades, and Kingdom Rush - Tower Defense. We matched them by the tags players give Last Castle Guardians on Steam (Action Roguelike, Bullet Hell, Tower Defense, Strategy, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · Casual

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

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

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

Goobies
Shared: Action Roguelike · Bullet Hell · Roguelite

Necrosmith
Shared: Action Roguelike · Tower Defense · Bullet Hell

SHOOPER NOVA
Shared: Bullet Hell · Strategy · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelite

Bardbarian
Shared: Tower Defense · Strategy · Action Roguelike

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

Apocalypse Party
Shared: Action Roguelike · Bullet Hell · Casual

Thronefall
Shared: Tower Defense · Strategy · Action

Pass the Fear
Shared: Action Roguelike · Bullet Hell · Roguelite

Monsters are Coming!
Shared: Tower Defense · Bullet Hell · Roguelite

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

Cult of the Lamb
Shared: Action Roguelike · Roguelite · Strategy

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Mount & Blade II: Bannerlord
Shared: Strategy · Medieval · Action

Everything is Crab: The Animal Evolution Roguelite
Shared: Action Roguelike · Strategy · Roguelite