Games like 39 Days to Mars
Games like 39 Days to Mars include It Takes Two, Human Fall Flat, LEGO® Star Wars™ - The Complete Saga, Unravel Two, and Tick Tock: A Tale for Two. We matched them by the tags players give 39 Days to Mars on Steam (Adventure, Puzzle, Multiplayer, Local Co-Op, and Local Multiplayer): closest matches first, and among equally close ones the better-known games.

It Takes Two
Shared: Co-op · Multiplayer · Local Co-Op

Human Fall Flat
Shared: Co-op · Puzzle · Multiplayer

LEGO® Star Wars™ - The Complete Saga
Shared: Co-op · Adventure · Local Co-Op

Unravel Two
Shared: Co-op · Multiplayer · Puzzle

Tick Tock: A Tale for Two
Shared: Co-op · Puzzle · Adventure

Gang Beasts
Shared: Co-op · Multiplayer · Local Multiplayer

LEGO® Star Wars™: The Skywalker Saga
Shared: Co-op · Adventure · Multiplayer

PEAK
Shared: Co-op · Multiplayer · Adventure

Little Nightmares III
Shared: Co-op · Adventure · Multiplayer

Escape Simulator
Shared: Co-op · Puzzle · Multiplayer

Overcooked! 2
Shared: Co-op · Multiplayer · Local Co-Op

RV There Yet?
Shared: Co-op · Multiplayer · Adventure

Untitled Goose Game
Shared: Co-op · Multiplayer · Puzzle

Brothers - A Tale of Two Sons
Shared: Adventure · Puzzle · Atmospheric

LEGO® Marvel™ Super Heroes
Shared: Adventure · Local Co-Op · Co-op

Castle Crashers®
Shared: Co-op · Adventure · Local Co-Op

Little Nightmares II
Shared: Adventure · Puzzle · Singleplayer

REANIMAL
Shared: Co-op · Adventure · Multiplayer

The Past Within
Shared: Co-op · Puzzle · Multiplayer

Pikuniku
Shared: Adventure · Puzzle · Co-op

LEGO® Batman™: The Videogame
Shared: Adventure · Co-op · Local Co-Op

We Were Here
Shared: Co-op · Puzzle · Multiplayer

Keep Talking and Nobody Explodes
Shared: Co-op · Puzzle · Local Multiplayer

Big Walk
Shared: Puzzle · Adventure · Co-op Campaign