From the video description:

The era of fiddling with emulators to get Playground of Destruction working on a PC will soon be over.
As Mercenaries Recompiled approaches its last stages of testing and polish, the author KraftMacAndChee has deemed the project ready to be released publicly on 9/26 (this Saturday.)
The project makes it possible for Playground of Destruction to be played natively on a Windows PC or on Linux via Proton, without the need for the middleman of emulation. It also comes equipped with a mod menu, several graphical enhancements, fixes for various bugs that can be found in the original game, and many more features. Kraft will soon be dipping his toes into mod support for the project, so that large modding endeavors like PoD+ can be fully supported and experienced in their full glory.
We will be holding an event in the menace.pro discord on 9/26 at 4:00 PM Eastern time to show off the recomp and celebrate the release. A public build drop will follow afterwards, announced by Kraft.
Special thank you to all of the playtesters that aided with the polish and fixing up of bugs, and also to those that contributed anything else to the recomp. This timely and efficient release could not have been pulled off without you.

Not a member of the team, but someone who sunk a lot of hours into this game on the OG Xbox, despite somewhat frequent technical difficulties. I try not to wallow in nostalgia too often, but this feels like an acceptable exception, as a lil' treat. There is also a link to the creator's Discord in the description, if that's a platform you use and you're curious to get some more information.

Golly I hope this is as good as I remember it.

I sure had a lot of fun playing this game back in the day.

I’ve never played this one but I played the second on PS3 and been replaying recently. This would be great to see how the first one was.

Holy mother of recomps!

I will definitely be getting this one.

Linux (Proton) Native Compatibility

I had to sit down and drink a glass of anhydrous water after reading that...

As seems to be a recent trend I'm sure both 1 & 2 will be rereleased shortly with the absolute worst porting imaginable.

Kid-me wasted so many hours. I don't even think I even got very far. Most of it was just taking place in my own head. I think I used a cheat code to play as Han Solo or something. Man I loved the crap out of that game.

I don't use Linux, and I didn't know if there was a difference between any of those terms. Soni just used all of em 😅

There very much is a difference. Proton is the compatibility layer used to run Windows games in Linux. Native would not use Proton.

Those two are mutually exclusive. An application that uses Proton can't be natively Linux-compatible, and an application that is natively Linux-compatible can't run using Proton.

natively on a Windows PC or on Linux via Proton

Sounds like it's a Windows build, but the developers also provide first party support for running it on Proton.