Games like Odyssey: The Deep Space Expedition
Games like Odyssey: The Deep Space Expedition include Elite Dangerous, No Man's Sky, Feed and Grow: Fish, Wobbly Life, and Deliver Us The Moon. We matched them by the tags players give Odyssey: The Deep Space Expedition on Steam (Action, Adventure, Indie, Simulation, and Space): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space · Simulation · Action

No Man's Sky
Shared: Space · Adventure · Multiplayer

Feed and Grow: Fish
Shared: Simulation · Action · Multiplayer

Wobbly Life
Shared: Adventure · Simulation · Multiplayer

Deliver Us The Moon
Shared: Adventure · Action · Indie

Trailmakers
Shared: Action · Space · Adventure

Hand Simulator: Survival
Shared: Adventure · Simulation · Multiplayer

PUBG: BATTLEGROUNDS
Shared: Action · Multiplayer · Adventure

Starbound
Shared: Adventure · Space · Multiplayer

How to Fish
Shared: Indie · Multiplayer · Adventure

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

STAR WARS™: Squadrons
Shared: Space · Action · VR

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

SPORE™ Galactic Adventures
Shared: Action · Simulation · Adventure

The Long Drive
Shared: Multiplayer · Adventure · Simulation

Hard Bullet
Shared: Action · VR · Simulation

Chained Together
Shared: Adventure · Multiplayer · Casual

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

Contractors
Shared: Action · VR · Indie

PEAK
Shared: Adventure · Multiplayer · Exploration

Empyrion - Galactic Survival
Shared: Simulation · Space · Adventure

Terraria
Shared: Adventure · Multiplayer · Indie

House Flipper
Shared: Simulation · Multiplayer · Action

Gang Beasts
Shared: Action · Multiplayer · Indie