Twitch viewers
0
- Live channels
- 0
First reading taken Aug 9, 2026 — the chart appears once there are two.
Mobile game · 2015
Hidden Expedition: Smithsonian Castle
From Eipix, in partnership with Big Fish and the Smithsonian Institution, comes the epic continuation of the Hidden Expedition series! Your old buddy and H.E.L.P. operative Sam calls you in to investigate a strange anomaly at the Smithsonian Castle. You soon learn there's more to this anomaly than meets the eye, and H.E.L.P's reach stretches back to the Smithsonian's historic founding. Unlock the secrets of time travel as you follow the clues into the Smithsonian Castle's Civil War past.
Community activity
Last checked Aug 9, 2026
Community signals
How many people gather around Hidden Expedition: Smithsonian Castle outside the stores — members, subscribers and live viewers.
Not tracked for Hidden Expedition: Smithsonian Castle: Google Play, App Store, Steam, Discord, Reddit, YouTube. A platform appears here once the game has a link to it — most mobile games have no Steam port or subreddit, so a gap is normal rather than a sign the game is small.
Storyline
Your old buddy and H.E.L.P. operative Sam calls you in to investigate a strange anomaly at the Smithsonian Castle. You soon learn there's more to this anomaly than meets the eye, and H.E.L.P's reach stretches back to the Smithsonian's historic founding. Unlock the secrets of time travel as you follow the clues into the Smithsonian Castle's Civil War past.
Trailer
Gameplay Video
Screenshots
Frequently asked questions
When was Hidden Expedition: Smithsonian Castle released?
Hidden Expedition: Smithsonian Castle was released on May 15, 2015 for Android and iOS.
What platforms is Hidden Expedition: Smithsonian Castle available on?
Hidden Expedition: Smithsonian Castle is available on Android and iOS.
Share Hidden Expedition: Smithsonian Castle
Related games
Other mobile games from Big Fish Games.
Mahjongg Artifacts
2006 · iOS
Slingo Quest
2006 · BlackBerry OS
The Rise of Atlantis
2007 · Android, BlackBerry OS
Supercow
2007 · iOS
Build-A-Lot 2: Town of the Year
2008 · iOS
Mystery of Unicorn Castle
2008 · iOS
Treasure Seekers: Visions of Gold
2008 · iOS
Nocturnal: Boston Nightfall
2008 · iOS
Masters of Mystery: Crime of Fashion
2009 · iOS
Adventures of Robinson Crusoe
2009 · iOS
Megaplex Madness 2: Summer Blockbuster
2009 · iOS
Paradise Beach
2009 · iOS
Epic Adventures: La Jangada
2010 · Android, iOS
Awakening: The Dreamless Castle
2010 · iOS
The Mystery of the Crystal Portal: Beyond the Horizon
2010 · iOS, Windows Phone
Haunted Manor: Lord of Mirrors
2010 · iOS
Unsolved Mystery Club: Amelia Earhart
2010 · iOS
Pirate Solitaire
2010 · iOS
Mystery Trackers: The Void
2010 · iOS
~240Miriel's Enchanted Mystery
2010 · iOS
Phantasmat
2011 · iOS
Dark Parables: The Exiled Prince
2011 · iOS
Mystery Trackers: Raincliff
2011 · iOS
Treasure Seekers 3: Follow the Ghosts
2011 · iOS