Single-player games like Interkosmos 2000
Below are 10 single-player Steam games similar to Interkosmos 2000, 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 Interkosmos 2000 page.
Ranked picks
- 1

Interkosmos
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Adventure with Interkosmos 2000.
Interkosmos is an arcady astronaut adventure in VR. Brace yourself for a rush of hectic gameplay to challenge your inner cosmonaut, and a fun story full of twists and Cold War absurdities.
- 2

Kerbal Space Program
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Simulation with Interkosmos 2000.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 3

House of the Dying Sun
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Simulation with Interkosmos 2000.
House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.
- 4

Mars Horizon
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Simulation with Interkosmos 2000.
Lead a major space agency as you guide humanity to Mars in this strategy simulation game. Construct a base, design and build rockets, conduct missions throughout the Solar System, and write your own history of Space exploration. Created with support from the European Space Agency.
- 5

EVERSPACE™
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie with Interkosmos 2000.
EVERSPACE™ combines fast-paced combat with roguelike elements, great visuals and a captivating story. It takes you on a challenging journey through an ever-changing, beautifully crafted universe full of surprises. Shoot, craft and loot your way to victory while the odds are stacked against you.
- 6

Reentry - A Space Flight Simulator
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Adventure with Interkosmos 2000.
Do you have what it takes to become an astronaut? Reentry is a realistic space flight simulator inspired by the early NASA space programs, from orbiting Earth in Mercury and Gemini, to the moon landing in project Apollo. Learn the procedures. Operate the spacecraft. Complete the mission.
- 7

Space Docker VR
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Simulation with Interkosmos 2000.
A hardcore flight simulator for VR! Get in the cockpit, pilot a ship, and navigate hazardous environments on a journey to become an expert docker!
- 8

Universe Sandbox
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Simulation with Interkosmos 2000.
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
- 9

Metamorphosis
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required. Shares Indie and Adventure with Interkosmos 2000.
Play as Gregor, turned into a tiny bug, and set out on an extraordinary journey to unravel the mystery of your transformation. Metamorphosis is a first person adventure set in a surrealist world where your newfound abilities are your last and only hope for redemption.
- 10

Nemesis: Distress
Single-player alternative to Interkosmos 2000 — playable solo, no multiplayer required.
NEMESIS DISTRESS is a unique multiplayer Sci-Fi horror experience that aims at creating unforgettable, cinematic moments. Remember – this is NOT a shooter, in Nemesis you are not the hunter. You are the PREY.