There were two trees in the woods near each other, a Beech and Birch. They were somewhat friends.

One day a small sapling sprung up between the the two of them and thus began a squabble between the Beech and the Birch over whether the sapling was a son of Beech or a son of Birch. They agreed to disagree until the young sapling got old enough to start showing sure characteristics of being either a Beech or a Birch.

A few years later the young sapling had grown into a strapping little tree, though still not quite distinguishable as one type or another. The Beech swore it was a son of a Beech and of course the Birch maintained it was obviously a son of a Birch.

Finally along came a woodpecker. The Beech and the Birch immediately realized that the bird, being a connoisseur of all things wood, would be able to settle this debate once and for all. So they called to the woodpecker and asked him to weigh in. The woodpecker agreed and flew all around the young tree, eyeing it up and down. He landed on it and poked here and poked there clearly in deep concentration. After what seemed like an inordinate amount of time to the Beech and the Birch for something that each thought should be a quick and easy determination, the woodpecker announced his findings: "I'll be honest you Beech, and Birch you know I can't tell a lie; it's neither a son of a Beech nor a son of a Birch, but the finest piece of Ash I've ever stuck my pecker in." And he flew away with the most satisfied look on his face.

I have multiple copies as well, but holidays are coming and Steam allows you to gift purchases.

Don't have Windows. would be tempting otherwise.

This is great news!

... But I probably don't need to buy it a third (or fourth?) time.

I'd like that.
The game's still perfectly playable and fun, it's just a little quality-of-life sorta deal. 

Oh, the other thing I noticed that I forgot about yesterday is that at least on my mouse, when I want to bind the right or middle button to a control I have to press the opposite one.   So for example if I'm binding afterburner to the middle mouse button when I've selected the control in the menu and I'm told to input the control I want, I have to press the right mouse button instead.
Kinda weird, kinda not huge, but still it's a thing.

EDIT: I've also noticed now that sometimes when a dialog box shows up with a prompt for the player (like say, the "secret teleporter found, proceeding to secret level" in D2) it only shows up for a split second before the "continue" option activates seemingly by itself.  Also sometimes happens on player death for the respawn control.
Also not a huge deal.