99 Nights in the Forest is a co-op multiplayer survival horror experience on Roblox, developed by Grandma's Favourite Games. Players are dropped into a haunted woodland with a single mission: survive 99 nights while searching for four missing children who vanished in a forest rumored to be stalked by a terrifying supernatural deer.\n\nGameplay revolves around a day-night cycle. During daylight hours, players gather resources scattered across the map and bring them back to base to keep the campfire burning and fortify their camp. Once darkness falls, The Deer emerges as an aggressive predator, hunting anyone outside the campfire's protective light.\n\nTeams of up to four players can tackle the experience together or go it alone. Success requires balancing resource runs, base building, and the ever-present threat of nighttime ambushes. The game features additional enemies including wolves, bears, and cultists.\n\nLaunched in March 2025, the experience became one of Roblox's fastest-growing titles ever, accumulating nearly 26 billion lifetime visits and a 14-million-plus all-time peak concurrent player count. Its popularity led 20th Century Studios to option the property for a theatrical film adaptation.
