Games like Deliver Us Mars
Games like Deliver Us Mars include Portal 2, Tomb Raider Game of the Year, Detroit: Become Human, Starfield, and STAR WARS Jedi: Survivor™. We matched them by the tags players give Deliver Us Mars on Steam (Story Rich, Sci-fi, Mars, Singleplayer, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Singleplayer · Story Rich · Puzzle Platformer

Tomb Raider Game of the Year
Shared: Story Rich · Female Protagonist · Singleplayer

Detroit: Become Human
Shared: Story Rich · Singleplayer · Sci-fi

Starfield
Shared: Singleplayer · Sci-fi · Space

STAR WARS Jedi: Survivor™
Shared: Singleplayer · Sci-fi · Story Rich

Rise of the Tomb Raider™
Shared: Singleplayer · Female Protagonist · Story Rich

Portal
Shared: Sci-fi · Singleplayer · Puzzle Platformer

Marvel's Guardians of the Galaxy
Shared: Story Rich · Singleplayer · Sci-fi

Star Wars Outlaws
Shared: Singleplayer · Sci-fi · Female Protagonist

STAR WARS Jedi: Fallen Order™
Shared: Story Rich · Sci-fi · Action-Adventure

Quantum Break
Shared: Story Rich · Sci-fi · Singleplayer

Hellblade: Senua's Sacrifice
Shared: Story Rich · Female Protagonist · Singleplayer

Mass Effect (2007)
Shared: Sci-fi · Story Rich · Space

DEATH STRANDING DIRECTOR'S CUT
Shared: Story Rich · Cinematic · Singleplayer

Red Dead Redemption 2
Shared: Story Rich · Singleplayer · Realistic

Half-Life 2
Shared: Sci-fi · Story Rich · Singleplayer

STAR WARS™ Knights of the Old Republic™
Shared: Sci-fi · Story Rich · Singleplayer

INSIDE
Shared: Story Rich · Puzzle Platformer · Singleplayer

Mass Effect™ Legendary Edition
Shared: Story Rich · Sci-fi · Singleplayer

UNCHARTED™: Legacy of Thieves Collection
Shared: Story Rich · Singleplayer · Action-Adventure

A Plague Tale: Innocence
Shared: Story Rich · Female Protagonist · Singleplayer

ENSLAVED™: Odyssey to the West™ Premium Edition
Shared: Story Rich · Singleplayer · Sci-fi

PRAGMATA
Shared: Sci-fi · Singleplayer · Story Rich

Deliver Us The Moon
Shared: Sci-fi · Story Rich · Space