Thanks again for bringing this to my attention, surprising no one else has reported this. Could just be no one uses Linux all that much for gaming.

In the meantime perhaps playing in windowed mode, leaving fullscreen (F11), may help work around that.

I have some ideas now for a patch, but I'll have to test using my Linux CD since it's not installed. The next patch comes out before Halloween so hopefully I can get it fixed before then.

I greatly appreciate the time you took to report this, it could have gone unnoticed for so long

I think I also know what happened during the "ball was stuck moving slow" issue, it seems to be related to the tutorial. It slows the game down to introduce the controls, but for some reason I didn't see the text instructing what the button prompt is for.

I have an idea to make it more obvious and I'll look into why the text didn't show.
Engines make development quick and simple, but give you all these weird spokes sticking out making the strangest edge cases.

I'm sure many do, but subjectivity matters in this context. That is to say I haven't had many Linux players for my own game, and therefore it is likely to have more bugs. I'm sorry for the rough first impression, I hope to get these things fixed as soon as I can.

The game is still in alpha status so a few bumps are to be expected, more testers greatly helps process. I'll add the F11 problem to the bug tracker too, I can't imagine why the engine would have such a broken Linux build -- the engine core developers all use Linux primarily. I'll do some digging

Thanks for the assistance, perhaps I could use you to help test the patch. Got one of the issues solved so far I think.

I will let you know in this thread when I have the patch ready for the Linux issues.

Right now I'm finishing up work on a game launcher so people won't need to go to itch to download the latest. The launcher will also allow people to opt-in to testing the dev branch (and switching between)