Single-player games like Orbital Decay
Below are 8 single-player Steam games similar to Orbital Decay, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Orbital Decay page.
Ranked picks
- 1

Voyager 2
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Indie and Simulation with Orbital Decay.
Launch the Voyager space probe to the furthest depths of the Solar System! Use gravity to slingshot around planets and scan, orbit, or land on targets to earn stunning replays of your accomplishments.
- 2

Aero Striker - World Invasion
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Aero Striker is a highly stylized action-packed flight combat simulator game that is intentionally designed to be easy to make it more enjoyable and less nerve-racking. The aim is to have fun making aliens explode while experiencing the sensation of flying. Let none of the evil aliens escape!
- 3

Cosmic collapse
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Lasers, blasters, black holes and a lot of enemies... All this is in the endless space, the expanses of which you have to clean up from enemies!
- 4

Farlane
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Command a Nomad-class Frontier Runner and lead your crew on the edge of a fading galactic empire. Take on freelance contracts, explore unstable farlanes, upgrade your ship, and survive where civilization ends.
- 5

Mud River
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Mud River is a horizontal 2D Shoot‘em Up game. The Rio Doce (Sweet River) was a paradise for mankind and animals, but now it has become a territory destroyed by the unscrupulous activities of Dr. Wellin. This is Pacal's first destination, ascending the Rio Doce preventing its complete destruction.
- 6

Space Simulation Toolkit
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Indie and Simulation with Orbital Decay.
Physics sandbox game that uses a graphics card as a supercomputer. Change the laws of physics, design mechanisms, create A-Life worlds and inhabit them with living beings, experiment with evolution and AI.
- 7

Nimbatus - Drone Creator
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Use the Nimbatus Drone Creator to construct physically simulated drones and try them out in a virtual testing environment. Do you have what it takes to become a drone engineer?
- 8

Go For Launch: Mercury
Single-player alternative to Orbital Decay — playable solo, no multiplayer required. Shares Action and Indie with Orbital Decay.
Re-live the early days of spaceflight in the accurate, detailed and exciting simulation of the Mercury spacecraft.