Unlike most stuff on Lie Day, ie the countless "announcements" of fake stuff and fake news stories, the Chess game is real. You can download it. It works. The Rooster Teeth folks validated it by awkwardly shoehorning it into a program where it didn't belong.
It's clearly a joke of some kind but heck, just like the BUNGLE playlist, it's more real and tangible than 99% of the stuff out there.
Regardless if the source is Bungie, RT, or some basement dwelling, modding maestro, it's pretty cool.
This is like the Star Wars Taun-Taun guts and innards sleeping bag, so awesome it became real.