Games like Apocalypse Survivor
Games like Apocalypse Survivor include Freeman: Guerrilla Warfare, BioShock Infinite, PUBG: BATTLEGROUNDS, ORION: Prelude, and Mount & Blade II: Bannerlord. We matched them by the tags players give Apocalypse Survivor on Steam (Action, Indie, Adventure, Strategy, and RPG): closest matches first, and among equally close ones the better-known games.

Freeman: Guerrilla Warfare
Shared: Action · Strategy · RPG

BioShock Infinite
Shared: Action · Shooter · FPS

PUBG: BATTLEGROUNDS
Shared: Action · Shooter · FPS

ORION: Prelude
Shared: Action · FPS · Adventure

Mount & Blade II: Bannerlord
Shared: Strategy · RPG · Action

Ready or Not
Shared: FPS · Shooter · Action

Borderlands 2
Shared: Action · Shooter · RPG

Caster
Shared: Action · Indie · Adventure

Serious Sam 4
Shared: Action · FPS · Adventure

Far Cry 3
Shared: Action · Adventure · FPS

Bright Memory: Infinite
Shared: Action · Indie · FPS

Aimlabs
Shared: Action · FPS · Shooter

The Ascent
Shared: Action · RPG · Indie

Middle-earth: Shadow of War
Shared: Action · RPG · Adventure

DOOM Eternal
Shared: Action · FPS · Violent

Gunfire Reborn
Shared: FPS · Indie · Action

Borderlands 3
Shared: RPG · Action · FPS

Orcs Must Die! 2
Shared: Action · Strategy · Indie

SUPERHOT
Shared: Action · Indie · FPS

Half-Life 2
Shared: Action · FPS · Adventure

S.T.A.L.K.E.R.: Shadow of Chornobyl - Enhanced Edition
Shared: Action · Adventure · RPG

Mount & Blade: Warband
Shared: RPG · Strategy · Action

RoboCop: Rogue City
Shared: Action · FPS · Shooter

Fallout 4
Shared: Adventure · RPG · Action