Games like ASTROSWARM
Games like ASTROSWARM include ULTRAKILL, BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT, Ziggurat 2, Bloodshed, and Roboquest. We matched them by the tags players give ASTROSWARM on Steam (Action Roguelike, Arena Shooter, Boomer Shooter, FPS, and Roguelite): closest matches first, and among equally close ones the better-known games.

ULTRAKILL
Shared: Boomer Shooter · FPS · Arena Shooter

BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT
Shared: Boomer Shooter · Arena Shooter · FPS

Ziggurat 2
Shared: FPS · Boomer Shooter · Arena Shooter

Bloodshed
Shared: Action Roguelike · Boomer Shooter · FPS

Roboquest
Shared: Action Roguelike · FPS · Roguelite

Half-Life 2
Shared: FPS · Action · Shooter

Black Mesa
Shared: FPS · Action · Shooter

Gunfire Reborn
Shared: Roguelite · FPS · Action Roguelike

AMID EVIL
Shared: Boomer Shooter · Arena Shooter · FPS

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

Immortal Redneck
Shared: Action Roguelike · Boomer Shooter · FPS

Deep Rock Galactic: Rogue Core
Shared: FPS · Action Roguelike · Roguelite

Titanfall® 2
Shared: FPS · Shooter · Action

Ziggurat
Shared: Action Roguelike · Roguelite · FPS

STAR WARS™ Battlefront™ II
Shared: Shooter · FPS · Action

Warhammer 40,000: Boltgun
Shared: Boomer Shooter · FPS · Shooter

Turbo Overkill
Shared: Boomer Shooter · FPS · Shooter

Deadlink
Shared: Action Roguelike · FPS · Arena Shooter

DOOM
Shared: FPS · Shooter · Action

BioShock Infinite
Shared: FPS · Shooter · Action

Halo Infinite
Shared: FPS · Shooter · First-Person

Deadzone: Rogue
Shared: FPS · Roguelite · Shooter

CULTIC
Shared: Boomer Shooter · FPS · Shooter

SULFUR
Shared: Action Roguelike · FPS · Roguelite