Games like Necrodome
Games like Necrodome include Warhammer 40,000: Boltgun, ULTRAKILL, DUSK, Quake, and CULTIC. We matched them by the tags players give Necrodome on Steam (Arena Shooter, Combat Racing, 3D, Old School, and Racing): closest matches first, and among equally close ones the better-known games.

Warhammer 40,000: Boltgun
Shared: FPS · Retro · Old School

ULTRAKILL
Shared: Arena Shooter · FPS · Singleplayer

DUSK
Shared: FPS · Retro · Old School

Quake
Shared: FPS · Old School · Singleplayer

CULTIC
Shared: Old School · FPS · Shooter

DOOM + DOOM II
Shared: FPS · Retro · Old School

Need for Speed™ Heat
Shared: Racing · Combat Racing · Singleplayer

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

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

Ion Fury
Shared: FPS · Old School · Retro

Wolfenstein 3D
Shared: FPS · Retro · Old School

HROT
Shared: FPS · Retro · Old School

RAGE
Shared: FPS · Racing · Singleplayer

Project Warlock II
Shared: Old School · Retro · FPS

Slayers X: Terminal Aftermath: Vengance of the Slayer
Shared: Retro · FPS · Old School

AMID EVIL
Shared: Arena Shooter · Old School · FPS

WRATH: Aeon of Ruin
Shared: FPS · Old School · Retro

FlatOut 2
Shared: Combat Racing · Racing · Driving

Tokyo Xtreme Racer
Shared: Racing · 3D · Driving

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

Deathmatch Classic
Shared: FPS · Arena Shooter · Old School

Counter-Strike
Shared: FPS · Shooter · Action

Need for Speed™ Unbound
Shared: Racing · Combat Racing · Singleplayer

Turbo Overkill
Shared: FPS · Retro · Shooter