This week saw the release of Convergence #0, the official kick-off to DC's summer event where remnants of destroyed alternate realities find themselves stuck together on one planet and fight it out (but please don't get that confused with Marvel's upcoming summer event where remnants of destroyed alternate realities find themselves stuck together on one planet and fight it out, Secret Wars). The last ten or so pages of the issue clarify who will be involved by giving a list of 41 worlds. Most of them are ones you'd guess: past versions of DC (Flashpoint, pre-Flashpoint, pre-Zero Hour, etc), possible futures (various version of the Legion of Super-Heroes, Kamandi, Hex, etc), older versions of alternate earths (Earth-4, Earth-S, Earth-X), and popular Elseworlds (Kingdom Come, Superman: Red Son, etc). Some are more surprising, like Sugar and Spike. And then, at the very end, is Injustice: Gods Among Us.
Injustice: Gods Among Us is a 2013 fighting game pitting heroes against villains and other heroes, and I hate it. The storyline is atrocious (it starts off with Superman killing The Joker after The Joker kills Lois Lane, and then Superman establishing a new world order with him as the high chancellor) and somehow the costumes are even busier than the New 52 versions, which is quite a feat.
I have no idea how Injustice made it as one of the 41 worlds when things like The Nail didn't, or why it's the only non-comics media world to be included, instead of something like Super Friends or the DC Animated Universe. But here we are.
And here's a page from the upcoming Convergence #1 that shows just how dire this stupid reality is.