A downloadable game for Windows, macOS, and Linux

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Stack, launch and catch Starship and Super Heavy Booster using Mechazilla at SpaceX Starbase Texas, Boca Chica! All from a first person perspective or in VR.

Just download the zip, unzip and run it. There are some general tips here below. For more details check out the topics in the community section at the bottom.

Current Status

Due to last minute bug fixing, the July build became an August build. There probably won't be another August build anyway, if I actually start with the tank farm now.

I had to push back the tank farm as the new Unity beta came out which I had to update to and check out. So far only the water is usable, unfortunately. The volumetric fog is interesting, but doesn't seem feasible right now for my application.

Other than that the ship and booster models have been updated and satellite dispensing added. The ship mesh is also moddable now. But it's a bit complicated. More later.

There seems to be an issue with building for Linux in the current Unity beta. I think it needs to be fixed by Unity. As there are usually only like four people downloading the Linux version, I won't spend any more time investigating this further at the moment. Sorry!

Regarding the Mac version there were some issues with the addressable stuff, so let me know if it works and if you can load the Starship models. If the model is missing on startup, just delete the Starship folder in Resources\Data\mods\

Follow the latest developments: https://twitter.com/Ashtorak

(Note: If you send me a DM on Twitter, it might take a couple of days for me to respond as I often miss these.)

Main version is for Windows 10, where I am also developing on (should also run on other Windows versions since 7). Other builds are less tested. Check the download instructions if you have problems. The old WebGL version is still available for nostalgia.

Besides downloading the zip, there is also the Itch App (similar to Steam) for all platforms which does the download for you and provides some more features for automatic updating which I might use in the future. 

Mobile/Phone Version: Since some people have been asking. I tried a mobile build, but it runs really bad, unusable. Would need quite some optimization work as well as UI work. I'll stick to PC for the moment.


VR works only in the Windows version and with OpenXR. So it should run on any headset that supports it, hopefully. It's tested with an Oculus Rift CV1. Enable it from the main menu. The community section at the bottom has a thread with more info, where you can give feedback also. VR is pretty basic still. So don't go in with too high expectations.

Gameplay Notes

Standard WASD control with Space to jump and LeftShift to run. ESC for menu to change quality and other settings. Reduce quality, if it runs slowly.

For VR see community thread at the bottom.

There are two control boards at the top of the tower and the launch mount to control the control everything. You can also place your own panel anywhere with 'C'.

There is also this showcase video which demonstrates how to do some stuff.

Please let me know, how it goes for you in the feedback thread or send me a message on Twitter.

Find known issues here.

Hardware requirements: It runs usable on my laptop with a Ryzen 3 4300u on low quality. For ray tracing and such you should have an RTX2060 or higher.


Put in tank farm and detailed tanking process. 

Maybe more VR stuff whenever I get some hand controllers.

A cherry picker has to come at some point as well.

Make everything better and bigger :)

My focus is on the ground base stuff, the things that we see on the live streams and pictures every day.

Get mentioned as a Builder

If you like this project and send some money to show your appreciation, you help building it.

With a contribution of 9 $ or more you can get your name as a builder in-game, if you want. (I'll try to contact you via the mail address the payment provider sends me. If there is no reply, I'll put you in as Anonymous.)

At the moment the builder money will mostly go into improving the 3D art, which means buying assets or paying artists.

Any contribution is of value. It doesn't need to be money. It could also be a video, maybe a tutorial (please tweet it at me), bug reports, feedback or just sharing it.

10 % of it go to itch and another 10% will go to humanitarian aid for Ukraine. I don't know yet which charity exactly, so you can make suggestions here. I want to keep the 10% for other charities also in the future after the Ukraine situation is better.

If you have Euros, it would be better to send them directly via Paypal, if possible. Then it wouldn't need to be converted back and forth from $.

If you have some spare crypto, check out this community topic.

Who is the developer and what's the motivation

After finishing my Master in electrical engineer I worked  at a nuclear fusion research facility for 10 years. But I was always also interested in gaming, technology and space stuff. Now I want to recreate what it is like to stack, launch and catch the biggest fucking rocket. It should feel close to reality and include some of the interesting technical aspects.  At the moment I am working almost full time on this while living off of savings.

Currently I am doing most of it myself. Only with 3d models I get help by wonderful people like Owe,  SAMCG14, @Sushifoxxstudio, Nick @_AstroGuy_ and more below.

Become a Creator

You can become a creator by contributing 3D art. Ideally an Unity prefab or a Blender model, which I can use without much additional work. Currently I am looking for a simple Raptor 2 model with not too many polys (or LODs) and as few materials/textures as possible. There is also still the need for a good QD arm and updated Starship and Booster models. Also, some better terrain would be nice. 

Creators will get a special mention.

You find my mail address when you open the game, Twitter is also fine. Please contact me first before sending any files.

I am not sure, I can fully open source an Unity project. I have to look into it, but for the moment I need to learn more about Unity programming myself and get the basics done right. There is a lot changing all the time, so going open source probably wouldn't help much at the moment.  If you want to help with programming you can contact me and maybe we find a way.

Special Thanks

to Mo, Aeneas, Owe and the rest of the Senkrechtstarter Community for inspiration and references as well as NASASpaceflight, Lab Padre, RGVaerialphotos and the whole Twitter/Discord Starship community.

Credits and Asset Sources

If someone doesn't want their stuff to be used, please let me know (best on Twitter).

- Starship/Booster pics by @_brendan_lewis

- Raptor V1 by @AlexSvanArt

- new Booster, Ship and Starlink by @Sushifoxxstudio

- Launcht mount by Owe

- launch tower is from the awesome SAMCG14 KSP mod Starship Launch Expansion

- old Starship, Booster and hopper .stl models by Nick @_AstroGuy_: https://www.thingiverse.com/thing:4930612

Springblade leg design for Starship by Steve Mattinson

- @RGVaerialphotos, launch site photo from July 1st, 2021: https://twitter.com/RGVaerialphotos/status/1411457130213826563/photo/1

- PortaPotty by DocMyers: https://www.thingiverse.com/thing:4834503

- Cybertruck by denniswoo1993: https://www.cgtrader.com/products/cybertruck-ed8afb59-b0db-4ed2-b6ea-f3b24c39a53...

- Some smaller prop packs and basic starter stuff from the Unity Asset Store which you can find easily yourself

- The construction ambient is from some NASASpaceflight video. Follow them on youtube, if you don't already!

- The raptor flames are inspired by Zorg's KSP config

- Saturn V by MargetaCG: https://www.cgtrader.com/free-3d-models/aircraft/historic-aircraft/saturn-v-1479...

- Most of the sound effects are from freesound.org. I can make a list, if someone is interested.

Other similar projects

If you really want to fly Starship and the booster, there are lots of mods for Kerbal Space Program. But I don't know much about KSP. You should definitely check out the mod Starship Launch Expansion though.

There is also the roadtomars project, which is pretty similar and has much more of Starbase to explore and other stuff to do. But it's not yet out. Maybe there will be some kind of collaboration in the future.

Here is another Starbase sim at a different stage of development: Spaceport-x by Chris Schaller.

I guess, we could achieve more, if we all would work together on one project. On the other hand, I find it quite engaging to work on all aspects of the game and not just one part. I also want to be always on the latest Unity betas to use the newest features. This might be problematic for a bigger project with more people.

Maybe, If I ever get enough support I could open source as much of my stuff as possible. So others could use it in their projects. That would also be one way to collaborate.

Another interesting project is this 3D experience of a possible Starship interior by @_DesignFreedom. Would be cool to have something like this also. It's quite detailed though.

Also interesting: HoppAR mobile app for alternate reality launches.

Licensing Terms

It's just a game. You can do whatever you want with it. If you make a video or so please tweet it at me, if possible, and mention me somewhere. No need to ask for permission.

However, please don't extract assets and use them in your own projects without asking me or the original author before.  A lot of it is public anyway. So you can just get it directly from the primary source. If you are interested in my modified versions, send me a message.


StatusIn development
PlatformsWindows, macOS, Linux
Rated 5.0 out of 5 stars
Made withUnity
Tags3D, First-Person, spacex, Virtual Reality (VR)
Average sessionA few minutes
InputsKeyboard, Mouse


Download NowName your own price

Click download now to get access to the following files:

StarbaseSim-20220806-Windows.zip 503 MB
StarbaseSim-20220806-Mac.zip 471 MB
StarbaseSim-20220630-Windows.zip 485 MB
StarbaseSim-20220630-Linux.zip 525 MB
StarbaseSim-20220630-Mac.zip 448 MB
StarbaseSim-20220802-MODJECT-for-Unity2022.2.0b3.zip 14 MB

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