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Operate the Starship space launch system and learn how to catch a rocket to understand what it takes to colonize Mars in this ever-evolving simulation of SpaceX Starbase Texas.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
Try this game before buying.
Important info before you buy the early access version: Development is progressing on a very slow pace currently and there will probably only be small, infrequent updates going forward. See latest announcement for more.
This is a physics sandbox where you can play around with Starbase devices.
You walk or fly around in first or third person to look at and operate all kinds of devices. For example, you can drive a so called Self Propelled Modular Transporter (SPMT) under the booster, lift it up, transport it from the build site to the launch site (at real world scale and distances), pick it up with the launch tower lifting device (a.k.a. chop sticks) and put it on the launch mount.
Then you can do the same for the second stage and stack it on top, fuel the full stack with the tank farm, launch the stack, do the hot staging maneuver and return first and second stage to launch site and try to catch them with the chop sticks.
All this is simulated with more or less realistic, slightly simplified physics. You can have it fly mostly automatic (in the future hopefully completely automatic) or control everything yourself, if you want, down to the settings of the PID controllers for angular velocity.
But be warned: The game is still in an early stage. There are not much explanations or tutorials yet. You either will need some prior knowledge or a bit of time to figure out how everything works. For that, please read the in-game hints and tool tips.
Patience and a solid level of frustration tolerance will help you to have a great time as well! :)
You can do everything also in co-op mode in multiplayer. But it's very rough still. So expect some wonkiness. Consider it more as a nice-to-have add-on.
What you can not do yet: Flying into orbit around earth, or going inside the rockets, but you can follow them as observer anywhere as in other games like KSP. These features and much more, like Moon and Mars, are planned for the future.
The main idea with this project is to closely follow and recreate the developments of the real Starbase in BocaChica, Texas and have fun learning to understand how everything works there, and later if they go the Moon, we go to the Moon with them.
There is a lot missing that needs to be added, so this will be in Early Access for a while probably.
Third-party account: Epic Online Services (Supports Linking to Steam Account)
Lowest tracked price: CA$18.00 (Jul 7, 2026) · current best: CA$18.00.
97% positive reviews all-time · 2 peak players in the last 30 days.
Right now the cheapest offer for StarbaseSim is CA$18.00 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for StarbaseSim is CA$18.00 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
StarbaseSim peaked at 2 concurrent players on Steam in the last 30 days (highest on Jul 11, 2026). The player chart on this page updates daily.
Create a free price alert on this page and KingsPrice will email you when StarbaseSim drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
