I've been playing around with Unity on Windows for a few months. We have a couple licenses at work, and I may start using it professionally when I'm finished with my current project. I decided to check out the 2017.3 beta for Linux because Unity is currently the only reason I ever boot Windows at home. You're greeted with an annoying bug on the very first screen you see. You can't paste into the password field. This was reported over two years ago. How is this still broken? (I know how: you're using a message board as an issue tracker. That's just... no.) Overall, the performance seems great. Startup seems much faster than on Windows. (Everything runs better on Linux!) The first thing I did was drop a terrain into the scene, throw a texture on it, and replace the default camera with the first person controller from the standard library. Even this extremely simple scene runs noticeably better on Linux than Windows. Then I tried to edit the terrain. That's when things went off the rails. I can't even change the terrain size. The length is editable, but the width and height fields reset themselves every time they lose focus. Seriously, what? Also, tabbing through the inspector window is broken. You cannot tab to a field and begin typing. You must click each field to edit it. I hope the Unity developers aren't basing their resource allocation on the number of developers who use the Linux version, because the Linux version is frankly not usable in its current state. I'm sure there are many developers like myself who would love to use it but can't get past the bugs.