The Order 1886 was a very hyped up PS4 exclusive.
The game ended up being a massive failure of a game that was more akin to a bad interactive movie film.
Michael J. Fox is a Canadian actor who was prominent in 1980's films such as Back to the Future, Back to the Future Part II, Teen Wolf, and Back to the Future Part III: The Frighteners.
Michael J. Fox had developed Parkinson's Disease later in life.
Parkinson's Disease is an incurable nervous system disorder that affects movement, and often causes tremors.
The gif in question, from the American animated comedy series South park, depicts main character Stan Marsh in a movie theater watching a terribly unfunny Adam Sandler movie or some such awfulness, eating popcorn but getting it everywhere, because Stan is currently drunk from underage drinking to help him battle severe depression.
The joke in the filename implies that Stan is Michael J. Fox, and that he's "Playing" the "Game" The Order 1886 by watching it in a movie theater, because as I mentioned before, it's basically a terrible movie with awful gameplay and quick time events out the ass.
Stan drunkenly getting popcorn all over himself is meant to represent the tremors that Michael J. Fox might experience while eating popcorn due to his Parkinson's Disease.
I hope this explains the joke.