Games like Rogun Arena
Games like Rogun Arena include Starship Troopers: Extermination, Aimlabs, Borderlands 4, Echo Point Nova, and Project Sparrow. We matched them by the tags players give Rogun Arena on Steam (On-Rails Shooter, Arena Shooter, FPS, PvE, and Arcade): closest matches first, and among equally close ones the better-known games.

Starship Troopers: Extermination
Shared: FPS · First-Person · PvE

Aimlabs
Shared: FPS · eSports · First-Person

Borderlands 4
Shared: FPS · PvE · Action-Adventure

Echo Point Nova
Shared: FPS · Arena Shooter · 3D

Project Sparrow
Shared: Arena Shooter · FPS · eSports

Deep Rock Galactic
Shared: FPS · PvE · First-Person

SUPERHOT
Shared: FPS · Action · Time Manipulation

Call of Duty®
Shared: FPS · First-Person · Action

Black Mesa
Shared: FPS · First-Person · Action

GoreBox
Shared: FPS · PvE · 3D

Quake Live
Shared: Arena Shooter · FPS · eSports

Resident Evil Requiem
Shared: FPS · Action-Adventure · First-Person

Far Cry® 6
Shared: FPS · Action-Adventure · Action

ULTRAKILL
Shared: FPS · Arena Shooter · First-Person

Counter-Strike
Shared: FPS · Action · First-Person

Warhammer 40,000: Darktide
Shared: FPS · PvE · Atmospheric

Counter-Strike: Source
Shared: FPS · First-Person · eSports

Zort
Shared: PvE · First-Person · Action-Adventure

Squad
Shared: FPS · PvE · First-Person

Quake Champions
Shared: Arena Shooter · FPS · Early Access

KovaaK's
Shared: FPS · First-Person · Action

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

Far Cry® 5
Shared: FPS · Action-Adventure · First-Person

Warhammer 40,000: Boltgun
Shared: FPS · Arcade · First-Person