Running the game in Linux through Wine results in a small black window that does not respond to being closed (until I force it). The WebGL version works but becomes laggy terribly fast. The application produces a log, but with 0 bytes.

Also, is there no ability to export saves?

We've uploaded a Linux build. You can try playing it.

And unfortunately but this early demo has no way to export the save file. We've added it to our TODO tasks and will make it possible in the future releases.

Runs now! Thanks.

Succeeded the hundredth stage and completed the demo.

If only all game devs added Linux versions just like that. Thanks a lot!