Games like Alien Flex
Games like Alien Flex include High On Life, Marvel's Guardians of the Galaxy, Far Cry 3 - Blood Dragon, Cyberpunk 2077, and Ghostrunner. We matched them by the tags players give Alien Flex on Steam (Cyberpunk, Action-Adventure, Comedy, Memes, and Shooter): closest matches first, and among equally close ones the better-known games.

High On Life
Shared: Comedy · Action-Adventure · Singleplayer

Marvel's Guardians of the Galaxy
Shared: Action-Adventure · Singleplayer · Action

Far Cry 3 - Blood Dragon
Shared: Comedy · Cyberpunk · Action

Cyberpunk 2077
Shared: Cyberpunk · Singleplayer · Futuristic

Ghostrunner
Shared: Cyberpunk · Action · Singleplayer

High On Life 2
Shared: Action-Adventure · Comedy · Shooter

PRAGMATA
Shared: Action · Action-Adventure · Sci-fi

Atomic Heart
Shared: Action-Adventure · Action · Adventure

RoboCop: Rogue City
Shared: Cyberpunk · Action · Singleplayer

Crysis Remastered
Shared: Action · Shooter · Singleplayer

Half-Life 2
Shared: Action · Shooter · Singleplayer

Warhammer 40,000: Space Marine 2
Shared: Action · Action-Adventure · Adventure

SANABI
Shared: Cyberpunk · Action · Action-Adventure

Black Mesa
Shared: Action · Shooter · Singleplayer

Crysis 2 - Maximum Edition
Shared: Action · Shooter · Singleplayer

Deus Ex: Mankind Divided
Shared: Cyberpunk · Action · Sci-fi

Duke Nukem Forever
Shared: Action · Shooter · Comedy

Tomb Raider Game of the Year
Shared: Action · Adventure · Action-Adventure

STAR WARS Jedi: Survivor™
Shared: Action · Action-Adventure · Singleplayer

BioShock Infinite
Shared: Shooter · Action · Singleplayer

Grand Theft Auto V Legacy
Shared: Action · Shooter · Adventure

Star Wars Outlaws
Shared: Action-Adventure · Action · Singleplayer

Rise of the Tomb Raider™
Shared: Action · Action-Adventure · Adventure

Serious Sam II
Shared: Comedy · Action · Shooter