All Participating Roblox Games
Roblox officially identifies nine participating horror experiences in The Hollow's Halloween crossover. Each contributes a named monster to the shared survival event. The official hub also confirms quests in participating experiences that award avatar items, although complete game-specific quest requirements are not listed in the announcement. The links below lead directly to the participating Roblox experiences.
99 Nights in the Forest
Associated monster: The Deer. This experience is officially named as part of The Hollow crossover. Individual event quest objectives and reward requirements are not specified in Roblox's announcement.
DOORS
Associated monster: Seek. DOORS is an officially participating experience. Its Roblox game description also explicitly identifies it as part of The Hollow event, but does not provide a complete Hollow quest walkthrough.
Dandy's World
Associated monster: Twisted Dandy. Dandy's World is officially participating, and its Roblox experience description mentions The Hollow Event Floor access in the lobby. Detailed event completion requirements are not provided there.
Piggy
Associated monster: Piggy. Roblox confirms Piggy's participation in The Hollow crossover. The official event announcement does not specify Piggy's individual event quest steps or avatar reward unlock conditions.
Scary Shawarma Kiosk
Associated monster: The Inspector. The official participating experience is Scary Shawarma Kiosk: the ANOMALY. Its specific Hollow quest requirements and event reward details are not established in the announcement.
Animal Hospital
Associated monster: Mimic. Animal Hospital is one of the nine officially announced crossover experiences. The official announcement does not provide an individual Hollow quest walkthrough or named reward for this experience.
Demonology
Associated monster: Biter. Demonology is confirmed as an official participating experience. Its specific event-related objectives, reward requirements, and Hollow crossover completion steps are not listed in the announcement.
The Mimic
Associated monster: Hiachi. The Mimic is officially participating in The Hollow. Its Roblox experience description mentions Halloween Trial badges, but those should not automatically be classified as Hollow rewards without additional official confirmation.
Warden
Associated monster: The Overseer. The official experience is WARDEN Sonaria Horror Escape. Roblox confirms its crossover participation, but the cited event announcement does not provide Warden-specific Hollow quest objectives or reward unlock instructions.