Games like Neon Apocalypsis
Games like Neon Apocalypsis include Escape From Duckov, ZERO Sievert, The Last Stand: Aftermath, Fallout 4, and DayZ. We matched them by the tags players give Neon Apocalypsis on Steam (Top-Down Shooter, Wargame, Extraction Shooter, Shooter, and 3D): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Extraction Shooter · Top-Down Shooter · Adventure

ZERO Sievert
Shared: Extraction Shooter · Post-apocalyptic · Shooter

The Last Stand: Aftermath
Shared: Top-Down Shooter · Shooter · Post-apocalyptic

Fallout 4
Shared: Post-apocalyptic · Adventure · Shooter

DayZ
Shared: Shooter · Post-apocalyptic · Open World

Red Dead Redemption 2
Shared: Adventure · Story Rich · Shooter

The Last of Us™ Part I
Shared: Post-apocalyptic · Shooter · Story Rich

RUNNING WITH RIFLES
Shared: Top-Down Shooter · Wargame · Top-Down

Foxhole
Shared: Wargame · Top-Down · Open World

Metro Exodus
Shared: Post-apocalyptic · Story Rich · Shooter

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Shooter · Post-apocalyptic · Open World

STALZONE
Shared: Extraction Shooter · Post-apocalyptic · Open World

ARC Raiders
Shared: Extraction Shooter · Shooter · Post-apocalyptic

Insect Swarm
Shared: Top-Down Shooter · Shooter · Top-Down

Snake Force
Shared: Top-Down Shooter · Shooter · 3D

SurrounDead
Shared: Post-apocalyptic · Shooter · Open World

Fallout: New Vegas
Shared: Post-apocalyptic · Open World · Adventure

The Ascent
Shared: Top-Down Shooter · Shooter · Adventure

Splatter - Zombiecalypse Now
Shared: Top-Down Shooter · Top-Down · Adventure

Far Cry 3
Shared: Shooter · Adventure · Open World

Far Cry® 5
Shared: Shooter · Open World · Story Rich

METRO 2033 Redux
Shared: Post-apocalyptic · Shooter · Story Rich

Zompiercer
Shared: Shooter · Post-apocalyptic · Zombies

American Fugitive
Shared: Adventure · Top-Down Shooter · Top-Down