Games like Mars: The New Eden
Games like Mars: The New Eden include Five Nights at Freddy's: Into the Pit, There Is No Game: Wrong Dimension, CARRION, Papers, Please, and The Rewinder. We matched them by the tags players give Mars: The New Eden on Steam (Adventure, Point & Click, Pixel Graphics, 2D, and Space): closest matches first, and among equally close ones the better-known games.

Five Nights at Freddy's: Into the Pit
Shared: Adventure · Pixel Graphics · 2D

There Is No Game: Wrong Dimension
Shared: Point & Click · Adventure · Pixel Graphics

CARRION
Shared: Pixel Graphics · 2D · Adventure

Papers, Please
Shared: Point & Click · Pixel Graphics · Indie

The Rewinder
Shared: Adventure · Pixel Graphics · 2D

Look Outside
Shared: Pixel Graphics · Adventure · 2D

Don't Escape: 4 Days to Survive
Shared: Adventure · Pixel Graphics · Point & Click

Terraria
Shared: Adventure · 2D · Pixel Graphics

DISTRAINT: Deluxe Edition
Shared: Pixel Graphics · Adventure · 2D

Space Pilgrim Episode I: Alpha Centauri
Shared: Adventure · Space · Sci-fi

WORLD OF HORROR
Shared: Pixel Graphics · Point & Click · Lovecraftian

Primordia
Shared: Adventure · Point & Click · Pixel Graphics

Out There Somewhere
Shared: Pixel Graphics · Adventure · 2D

Gods Will Be Watching
Shared: Point & Click · Pixel Graphics · Adventure

Thimbleweed Park™
Shared: Adventure · Point & Click · Pixel Graphics

Don't Escape Trilogy
Shared: Adventure · Point & Click · Pixel Graphics

Observation
Shared: Adventure · Space · Indie

Dead Cells
Shared: Adventure · Pixel Graphics · 2D

Alien: Isolation
Shared: Aliens · Sci-fi · Horror

SANABI
Shared: Pixel Graphics · Adventure · 2D

The Red Strings Club
Shared: Pixel Graphics · Adventure · Point & Click

Tales of the Black Forest
Shared: Pixel Graphics · Adventure · Indie

Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · 2D · Space

Deponia
Shared: Adventure · Point & Click · 2D