Early Access
Is Meco Rocket Simulator still being updated?
Yes, but updates are hit or miss. Last updated 52 days ago, with about one update every 2 months.
Last checked Oct 22, 2026
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About the game
A rocket engine design sim with real physics. Wire pumps, injectors and nozzles on a node graph, set the numbers, and test fire. Live graphs and 3D hardware answer every change. Fourteen guided missions with a senior engineer, or free build. Recreate the Merlin 1D, or build one that shouldn't work.
- Indie
- Simulation
AI Generated Content Disclosure
The developer filed this on the Steam store page. It is not a guess by active.games.
As a solo dev, I use custom-trained AI tools for a small portion of the visuals/audio, based on assets I own or created. The vast majority of my development effort goes into the realistic rocket simulation and engineering systems.
Update history
Recent updates
Aug 30, 2026 · Build
Public branch build 25020119
Latest build time Steam reports for the public branch.
Aug 26, 2026 · Patch note
ENGINE ASSEMBLIES - 0.6 Out Now! (opens in new tab)
[p align="start"][img src="{STEAM_CLAN_IMAGE}/43166508/ac43f7890f73f9361cbdf116e7b61bc55d5517a6.png"] Meco 0.6: Engine Assemblies (build it, see it, test fire it) "The nozzle carves itself out of the math now. Everything upstream of it is still your problem." -- Engineer Aoyama [p align="start"]Meco 0.6 is live. You set the numbers that matter. The sim buil…
May 21, 2026 · Patch note
Meco 0.5: Don't Break the Cycle (opens in new tab)
This one's been cooking for a while Meco 0.5.0 is live, and it does two things: it ships Chapter IV's cycle missions, and it rebuilds how new players get into the game. 100% of the components you need to construct a cryogenically cooled gas generator cycle engine The headline: with this release, the mission ladder now covers 100% of the components you need…
Jan 14, 2026 · Patch note
Meco 0.4.0: Turbopumps Are Here (opens in new tab)
[img src="{STEAM_CLAN_IMAGE}/43166508/95413675bb182040f18db24595c65fec4e615c6c.jpg"] Three New Missions Mission 7: Gearing Up — gear reduction and torque transitions Mission 8: Pump It Up — an RL-10 inspired LOX pump on a test stand Mission 9: Turbine Trials — F-1 engine turbopump dynamics Mission 9 was honestly my favorite to build. I spent way too many ho…
Dec 23, 2025 · Patch note
Meco 0.3.0: Three New Missions, Better Editor Controls, and Big Stability Wins (opens in new tab)
Meco 0.3.0 is live and it is a chunky one. This release adds three new missions : - Mission 4: Valve Ventures - Mission 5: The Combustion Catastrophe (inspired by SpaceX Merlin 1D) - Mission 6: The Cooling Crisis (inspired by NASA's RS-25 for Artemis/Space Shuttle) For Missions 5 and 6, we referenced publicly available engine information (cycle descriptions…
Questions
When was the last Meco Rocket Simulator update?
Meco Rocket Simulator last shipped a public branch build 52 days ago (Aug 30, 2026).
How often does Meco Rocket Simulator update?
It got about one update every 2 months over the last year and is sporadic (37/100). 5 of the last 12 months had at least one update day. Gaps between updates are uneven.
Is Meco Rocket Simulator abandoned?
No. It shipped a build or patch note within the last 90 days, though updates are hit or miss.
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