Hey, thanks for trying the demo.
Good to know that it seems to work with Wine.
Since I'm using GMS 1.4 to make the game, the "runner" for the native linux version is 32bit only and quite old, so there's not much I can do about the dependencies.
But I guess it doesn't matter much since it works with Wine anyway, just wanted to try and give you an explanation. ;)
Glad to hear that the difficulty and controls were fine, and don't worry about split-second timing, there should not be much of that in the game, if any at all.
Thanks for the feedback! :)