Games like Adam
Games like Adam include Phantom Abyss, Squad, Deadzone: Rogue, Far Cry® 5, and Gunfire Reborn. We matched them by the tags players give Adam on Steam (Action Roguelike, 3D Platformer, FPS, Perma Death, and PvE): closest matches first, and among equally close ones the better-known games.

Phantom Abyss
Shared: Action Roguelike · 3D Platformer · FPS

Squad
Shared: FPS · PvE · Realistic

Deadzone: Rogue
Shared: FPS · PvE · Roguelike

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

Gunfire Reborn
Shared: FPS · Roguelike · Action Roguelike

Abyssus
Shared: FPS · Action Roguelike · PvE

Crab Champions
Shared: Action Roguelike · Roguelike · 3D

Hades
Shared: Action Roguelike · Roguelike · Indie

KLETKA
Shared: PvE · Action Roguelike · First-Person

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

BPM: BULLETS PER MINUTE
Shared: FPS · Action Roguelike · Roguelike

SULFUR
Shared: Action Roguelike · FPS · Roguelike

Portal 2
Shared: 3D Platformer · First-Person · Story Rich

Hello Neighbor
Shared: 3D Platformer · First-Person · Action-Adventure

VLADiK BRUTAL
Shared: FPS · First-Person · Action-Adventure

Borderlands 4
Shared: FPS · PvE · Action-Adventure

Counter-Strike 2
Shared: FPS · First-Person · Action

Neon White
Shared: 3D Platformer · FPS · Action

Half-Life 2
Shared: FPS · Action · First-Person

RoboCop: Rogue City
Shared: FPS · First-Person · Cyberpunk

Deep Rock Galactic: Rogue Core
Shared: FPS · Action Roguelike · PvE

Cyberpunk 2077
Shared: FPS · Cyberpunk · Story Rich

Megabonk
Shared: Action Roguelike · Roguelike · Indie

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelike · Indie