Games like Boom Island
Games like Boom Island include Battlefield™ 1, PUBG: BATTLEGROUNDS, Project Wingman, Black Mesa, and DOOM. We matched them by the tags players give Boom Island on Steam (Action, Indie, FPS, Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.

Battlefield™ 1
Shared: FPS · Action · Shooter

PUBG: BATTLEGROUNDS
Shared: Shooter · FPS · Action

Project Wingman
Shared: Action · Indie · Flight

Black Mesa
Shared: Action · FPS · Shooter

DOOM
Shared: Action · FPS · Shooter

KovaaK's
Shared: Action · Shooter · FPS

Call of Duty®
Shared: FPS · Action · Shooter

BioShock Infinite
Shared: Action · Shooter · FPS

Wolfenstein: The New Order
Shared: Action · FPS · Shooter

Half-Life 2
Shared: Action · FPS · Singleplayer

DOOM Eternal
Shared: Action · FPS · Shooter

Bright Memory: Infinite
Shared: Action · FPS · Indie

SUPERHOT
Shared: Action · FPS · Indie

Wolfenstein II: The New Colossus
Shared: Action · FPS · Singleplayer

Left 4 Dead 2
Shared: FPS · Action · Shooter

Ready or Not
Shared: FPS · Shooter · Singleplayer

Battlefield™ 2042
Shared: FPS · Shooter · Action

Battlefield™ 6
Shared: FPS · Action · Shooter

Call of Duty®: Black Ops III
Shared: FPS · Action · Shooter

Metro Exodus
Shared: FPS · Action · Singleplayer

Titanfall® 2
Shared: FPS · Shooter · Action

Ravenfield
Shared: FPS · Shooter · Action

MULLET MADJACK
Shared: FPS · Action · Arcade

Call of Duty®: Modern Warfare® 2 (2009)
Shared: Action · FPS · Shooter