The Great Unknown Downloads & RevenueThe Great Unknown: Houdini's Castle HD · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperJoyBits Ltd.
CategoryGames
PriceFree
Released
Rating★ 4.3 (18)
Version1.2
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026The Great Unknown: Houdini's Castle HD update history & changes
Last change · 3 events since 11 Aug 2015Full timeline ↓Full timeline · 2 events in the last 12 months
- 🆕The Great Unknown: Houdini's Castle HD first spotted by AppInsiderUnited States (found via developer)
- 🆕The Great Unknown: Houdini's Castle HD released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.3 ★
18 ratings
Measured
The Great Unknown: Houdini's Castle HD on the App Store
App details
App ID
879439249
Publisher
JoyBits Co Ltd.
On the store since
Aug 2015
11 years on the store
Minimum OS
iOS 6.0+
Devices
iPad
Content rating
4+
Languages
9
NL EN FR DE IT JA PT RU ES
Size
261 MB
Also listed in
Puzzle, Adventure
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.3 ★
18 ratings
Measured
Ratings
18
Measured
About The Great Unknown: Houdini's Castle HD
SOLVE THE MYSTERIES OF HOUDINI'S CASTLE
Beautiful Hidden Object Game Play Combined with Mysterious Adventure!
All Ages Game Play!
Your honeymoon is cut short when your plane crashes on an uncharted island. You awake to discover a madman has kidnapped your husband. To get him back, you'll have to use all your wits to pass his sinister tests and solve the mysteries of Houdini's Castle. Along the way, you'll uncover Houdini's secret past and learn about the brilliant apprentice who changed his life. Can you expose Houdini's greatest trick to save your husband and escape the island?
- Fantastic hidden objective & adventure game play
- 60 vivid and mystifying locations
- 2 search modes and over 300 hidden items to find
- Dozens of fascinating mini-games
- Rare videos and historical documents
Beautiful Hidden Object Game Play Combined with Mysterious Adventure!
All Ages Game Play!
Your honeymoon is cut short when your plane crashes on an uncharted island. You awake to discover a madman has kidnapped your husband. To get him back, you'll have to use all your wits to pass his sinister tests and solve the mysteries of Houdini's Castle. Along the way, you'll uncover Houdini's secret past and learn about the brilliant apprentice who changed his life. Can you expose Houdini's greatest trick to save your husband and escape the island?
- Fantastic hidden objective & adventure game play
- 60 vivid and mystifying locations
- 2 search modes and over 300 hidden items to find
- Dozens of fascinating mini-games
- Rare videos and historical documents
Latest updates
1.2
