Games like BlastFort
Games like BlastFort include PUBG: BATTLEGROUNDS, ARC Raiders, Broforce, Brawlhalla, and Squad. We matched them by the tags players give BlastFort on Steam (Side Scroller, 2D Platformer, Shooter, Twin Stick Shooter, and Multiplayer): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: Shooter · Multiplayer · PvP

ARC Raiders
Shared: Multiplayer · Shooter · PvE

Broforce
Shared: Multiplayer · Side Scroller · Shooter

Brawlhalla
Shared: 2D Platformer · Multiplayer · Casual

Squad
Shared: Multiplayer · Shooter · PvE

Apex Legends™
Shared: Multiplayer · Shooter · PvP

HELLDIVERS™ 2
Shared: Shooter · PvE · Multiplayer

UpGun
Shared: Shooter · Multiplayer · PvP

Destiny 2
Shared: Multiplayer · Shooter · PvE

Paladins®
Shared: Shooter · Multiplayer · PvP

Alex Jones: NWO Wars
Shared: Shooter · 2D Platformer · Side Scroller

Warhammer 40,000: Shootas, Blood & Teef
Shared: Side Scroller · 2D Platformer · PvP

ShellShock Live
Shared: Multiplayer · Shooter · 2D

Titanfall® 2
Shared: Shooter · Multiplayer · PvP

Pixel Gun 3D: PC Edition
Shared: Shooter · Multiplayer · PvP

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Side Scroller · Multiplayer · 2D

World of Warships
Shared: Shooter · Multiplayer · PvP

Marvel Rivals
Shared: Multiplayer · PvP · Shooter

Marathon
Shared: Multiplayer · Shooter · PvP

How to Fish
Shared: Multiplayer · Shooter · Indie

THE FINALS
Shared: Shooter · Multiplayer · PvP

Mecha BREAK
Shared: Multiplayer · PvP · Robots

Stick Fight: The Game
Shared: Multiplayer · PvP · Action

METAL SLUG
Shared: Side Scroller · Multiplayer · Arcade