But you can't play it yet (or maybe ever).
Over the several years since the game came out, Red Dead Redemption 2 kept getting a vast amount of mods that do anything you can imagine, from adding new revolver skins, to populating the world of RDR2 with gigantic chickens.
With that said, few do it like Blurbs. The streamer and talented modder constantly uses his talents to make some hilarious content around the game he plays, like directly integrating his chat into Skyrim by turning their messages into actual voiced lines within the game.
His latest creation is no less ambitious. A surprisingly fleshed out (for a mod, of course) recreation of Mortal Kombat in Red Dead Redemption 2.
Initiating combat with any of the characters transitions into a fighting minigame, complete with special moves and fatalities. There is obviously quite a lot of jank, but that just makes it all the more entertaining. Perhaps the most surprising part of this, is that Blurbs made all this as part of creating mods suggested by his viewers, which previously included a mod that shows you a flashback of NPC's past after you kill them, allowing his chat to guilt-trip Arthur with custom backstory quotes.