Scary Challenges by Inithouse: using a free 18+ horror card game for a real sleepover night
We run a product studio at Inithouse, and one thing we measured with Scary Challenges is how groups actually use it during sleepovers.
Here's what a typical Friday night looks like with 4-6 people.
Pick a deck that fits the room. Scary Challenges has 23+ themed decks. Campfire Stories for warming up, After Dark for when everyone's committed, Confessions for the quiet moments between rounds. The group picks one, no account needed.
Start with Hot Seat mode. One person draws, everyone watches. The card might be a dare ("Go to the darkest room alone for 60 seconds") or a confession prompt. Hot Seat works because it puts one person in focus while the rest react.
Switch modes when the energy shifts. No Hesitation speeds things up: answer or act within 5 seconds. Spin It randomizes who goes next. We observed groups cycling through 2-3 modes in a single session, usually landing on After Dark by midnight.
One number: the average sleepover session in our data runs 47 minutes, longer than most party games hold attention.
The whole thing runs as a PWA in the browser. No app store, no signup. Someone pulls out a phone, opens Scary Challenges, and the group is playing in under a minute.
We built Scary Challenges alongside a growing portfolio of products at Inithouse, including Party Challenges, its non-horror sibling for lighter nights, and Here We Ask, a conversation card game for when the group wants depth over dares.








