A downloadable Submachine for Windows, macOS, and Linux

Submachine Universe is probably the first ever MSO (massively singleplayer online) created in 2010, extended ever since. You can freely travel between different locations, read theories about Submachine and observe how things work inside this network. There are locations that you might recognize from previous games, there's a lot of new yet undiscovered content, there are even locations that you think you know, but they're somehow different. Surely worth a look. The best part - it's an open project, which means I can add more locations later on and it will all work together smoothly. So, tinfoil hats on and start exploring if you dare, because there are some dark places inside.

[meanwhile, seven years later...]

In January of 2017 this project stopped being "online" and morphed into "free HD downloadable", and here we are.

More information

Published74 days ago
PlatformsWindows, macOS, Linux
AuthorMateusz Skutnik
Tagsescape, Point & Click, PuzzleScript, skutnik, submachine
LicenseAll rights reserved
Asset licenseAll rights reserved
Average sessionA few hours


Submachine Universe for PC (.exe) (68 MB)
Submachine Universe for OSX (.app and .swf) (80 MB)
Submachine Universe for Linux (.swf) (64 MB)


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This game will receive actualizations brief?

Brief gameplay question: is it possible to open the panel in the starting screen in the game's current iteration, or is that something you plan to add later? I also have a bunch of items that seem to be useless, so I was wondering if those might have uses in future updates as well.

it's not functional right now.

And yes, all those things will be useful eventually.

(Edited 1 time)

Are you supposed to be able to save in between sessions? It works if I quit to the menu and then hit "continue", but if I quit the app entirely I lose all my progress. (I'm running Windows 10, if that helps)

There are three possible issues here.
First - the saves are bound to the game file. So if you moved the swf file to another folder, or changed it's name - the saves will reset. Quick fix to reverse this is just to move the file back to the original folder or change the file name to as it was when you first played the game.

If the above is not the case - there's the second issue - in order for the game to save - you need to have local storage enabled in your flash player. Remember, this is still a flash game that requires flash player to function properly. Quick fix is to right click on the game screen, then click on settings and enable local storage option.

Read more about local storage and learn how to fix it on this flash player help page.

If that also doesn't resolve your issue, here goes the third option: certain antivirus software can block the file, since it's an .exe (or .app) and allow it to run as an untrusted software. That can cause the savefiles not to be stored. Make sure the game you bought is on a white list of your antivirus.

I have had the same problems as Temporal Twins

Any help?


there's no problem with zip files, it's all there. :D

He had an issue with his computer it seems.

(Edited 1 time)

What do i open the .swf file with, that would solve it

on what system?

If Mac - iswiff should do.

pc - any swf player you find to your liking, there's a wide range.

(Edited 1 time)

I can but it will only show a black screen when i hit play

The actual executable file does not seem to be included in the archive.

Just checked the files, everything seems to be in order. Which version did you download?

I tried both the Windows and Linux versions, but could not find the .exe or .swf files in the archives.
I thought that maybe my AV caught them but, if so, I neither found it in quarantine or mentioned in the logs.

Hey, wanted to let you know that I tried downloading the archive on another machine, and everything is there.
Seem that it's something with the PC I was using.
Sorry for the bother...

thanks for the heads up! :D