Games like GASP - Life on Mars
Games like GASP - Life on Mars include SMITE®, Plague Inc: Evolved, Game Dev Tycoon, War Thunder, and Aimlabs. We matched them by the tags players give GASP - Life on Mars on Steam (Indie, Casual, Simulation, Action, and Strategy): closest matches first, and among equally close ones the better-known games.

SMITE®
Shared: Free to Play · Action · Strategy

Plague Inc: Evolved
Shared: Simulation · Indie · Strategy

Game Dev Tycoon
Shared: Indie · Simulation · Casual

War Thunder
Shared: Simulation · Action · Free to Play

Aimlabs
Shared: Simulation · Free to Play · Action

Mini Motorways
Shared: Casual · Simulation · Strategy

Achievement Clicker
Shared: Casual · Indie · Simulation

Plebby Quest: The Crusades
Shared: Casual · Indie · Strategy

Pixel Puzzles: UndeadZ
Shared: Casual · Indie · Simulation

Total Tank Simulator
Shared: Simulation · Strategy · Action

911 Operator
Shared: Simulation · Indie · Strategy

Idle Champions of the Forgotten Realms
Shared: Strategy · Free to Play · Indie

Russian Life Simulator
Shared: Simulation · Indie · Action

BidKing
Shared: Casual · Simulation · Strategy

Where Winds Meet
Shared: Free to Play · Indie · Casual

Pixel Puzzles: Japan
Shared: Casual · Indie · Simulation

House Flipper
Shared: Simulation · Casual · Indie

Dictators:No Peace Countryballs
Shared: Simulation · Casual · Indie

Goat Simulator
Shared: Simulation · Casual · Indie

RADical ROACH Remastered
Shared: Indie · Casual · Action

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Retrowave
Shared: Indie · Casual · Simulation

Ultimate Epic Battle Simulator 2
Shared: Simulation · Action · Strategy

Once Human
Shared: Free to Play · Action · Simulation