Games like Terrorsepsis
Games like Terrorsepsis include Aimlabs, Arma 3, Crab Champions, REMNANT II®, and Grand Theft Auto V Legacy. We matched them by the tags players give Terrorsepsis on Steam (Action, Casual, Simulation, Arcade, and Shooter): closest matches first, and among equally close ones the better-known games.

Aimlabs
Shared: Action · Simulation · Shooter

Arma 3
Shared: Action · Simulation · Shooter

Crab Champions
Shared: Arcade · Casual · Third-Person Shooter

REMNANT II®
Shared: Action · Souls-like · Shooter

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third-Person Shooter

Bit Blaster XL
Shared: Bullet Hell · Arcade · Shooter

Internet Cafe Simulator 2
Shared: Simulation · Arcade · 3D

MechWarrior 5: Clans
Shared: Action · Simulation · Shooter

Arma Reforger
Shared: Simulation · Action · Shooter

Planes, Bullets and Vodka
Shared: Action · Casual · Arcade

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Arcade · Shooter · Action

Over The Top: WWI
Shared: Action · Shooter · Simulation

KovaaK's
Shared: Action · Simulation · Shooter

Into The Flames
Shared: Action · Simulation · Casual

s&box
Shared: Casual · Action · Shooter

IRON NEST: Heavy Turret Simulator
Shared: Simulation · Action · Immersive Sim

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Third-Person Shooter

House Flipper
Shared: Simulation · Casual · Action

Vampire Survivors
Shared: Bullet Hell · Casual · Action

Marvel Rivals
Shared: Action · Third-Person Shooter · Shooter

Megabonk
Shared: Action · Bullet Hell · Arcade

PowerWash Simulator
Shared: Casual · Simulation · 3D

HELLDIVERS™ 2
Shared: Action · Shooter · Third-Person Shooter

Goat Simulator
Shared: Simulation · Casual · Action