Owen Gleiberman Chief Film Critic “The Blackening” is a slasher movie that’s also a slapdash enjoyable social satire. That the satire turns out to be sharper than the scares isn’t a problem — it’s all part of the film’s slovenly demonic party atmosphere. The set-up, which feels like a “Friday the 13th” sequel by way of “Bodies Bodies Bodies,” reunites nine old college chums to celebrate Juneteenth weekend in a big roomy house they’ve rented near the woods. (Yes, it’s a cabin-in-the-woods movie, but “cabin” doesn’t describe this place.) As Tina Turner’s cover of “I Can’t Stand the Rain” spins on the turntable, the first two to arrive, Morgan (Yvonne Orji) and Shawn (Jay Pharaoh), find their way to the basement game room, which has shelves of old board games, an ancient TV set, a Ouija board, and a prominently displayed game called The Blackening. Taking the box cover off, they discover, to their horror, that there’s a plastic Sambo head in the middle of the board, which asks questions like “What’s the first Black character to survive a horror movie?” For a few minutes, we’re in the terrain of “Scream” by way of “Get Out.”