The Raven Key Card Set turns the Tower of London investigation into a physical card-supported Hauntline game.
Collect clue cards, carry key items, follow route cards through the fortress, and keep danger cards active until resolved. Scan or type visible card codes into the Hauntline GPT to trigger events, update inventory, unlock locations, and move toward the Traitor’s Gate finale.
This set is designed for The Raven Key expansion and works alongside the universal Hauntline Card System.
The Hauntline Card System turns printed cards into physical game pieces for AI-powered horror investigations. Cards can be collected, carried, scanned, typed by code, held for later use, discarded after use, or stored inside the player’s case file.
Instead of needing physical props for every item, clue, key, or event, players can use cards. A bell card becomes the bell. A key card becomes the key. A burden card becomes an active problem. A Safe Return card becomes a way to pause the horror and step back into safety.
The Raven Key cards are divided into four physical play areas: Journal / Case File, Inventory Ring, Active Event Area, and Finale / Safety.
When you find a clue, place the card in your Journal. When you collect a key item, carry the card in your Inventory Ring. When a route or danger appears, keep that card active beside the map until resolved. When a card is used, spent, cleared, or discarded, update both the physical card pile and the GPT inventory.
When you find a clue, place the card in your Journal. When you collect a key item, carry the card in your Inventory Ring. When a route or danger appears, keep that card active beside the map until resolved. When a card is used, spent, cleared, or discarded, update both the physical card pile and the GPT inventory.
Journal / Case File — store starting scenes, clues, rules, records, and discovered truths.
Inventory Ring — carry usable items such as the Raven Key.
Active Event Area — keep route and danger cards visible until resolved.
Finale / Safety — hold Traitors Gate and Safe Return until the game calls for them.
This 9-card set supports the Tower of London investigation with physical clues, route events, key items, danger triggers, finale access, and Safe Return. Use the cards during play by scanning the image, uploading a photo, or typing the visible card code into the GPT.
Starts The Raven Key investigation at the Tower of London’s main gate. Place this card in your Journal / Case File as the starting scene card.
Adds the first raven-linked clue to the case file. Place this card in your Journal and reference it when the game asks what the birds are warning you about.
A route card that leads deeper into the Tower. Keep it active beside the map until the footsteps are followed, resisted, or explained.
Add this card to your Inventory Ring. Use the Raven Key when a sealed gate, locked record, hidden chamber, or symbolic Tower route appears.
A protective or warning symbol tied to the ravens. Place it in your Journal / Case File and use it to interpret whether a path is guarded, forbidden, or safe.
A chapel or archival record tied to the missing prisoner. Place this card in your Journal / Case File. It may unlock extra choices when the case asks for proof, motive, or history.
A danger card linked to the river and Traitor’s Gate. Keep it active until resolved. If answered carelessly, Presence may rise or the finale path may darken.
Triggers the finale at Traitor’s Gate. Use this card only when the case has reached the final confrontation or the GPT instructs you to reveal it.
Pauses the case and returns the player to the last safe point. Hold this card in reserve and use it when the game needs to stop, recap, reset, or step back from danger.
The Raven Key card set uses several card types to control physical and digital play.
Entry Cards — start or anchor the investigation.
Clue Cards — store evidence inside the Journal / Case File.
Item Cards — enter the Inventory Ring and can be used during scenes.
Route Cards — open, change, or test movement through the Tower.
Danger Cards — stay active until the threat is resolved.
Finale Cards — trigger the final confrontation.
Safe Cards — pause the game or return the player to a safe point.
The Inventory Ring is the player’s real-world card inventory. It can be a binder ring, pouch, card sleeve, journal pocket, or case-file stack.
When the GPT says an item is found, the player takes the matching card. When the item is used, spent, traded, or consumed, the player discards or archives the card. This keeps the physical table state and the GPT game state aligned.
Explore Hauntline’s playable haunted locations. Each case is inspired by a real place, public legend, ghost-story tradition, or historic atmosphere, then adapted into a fictional interactive horror investigation. Play remotely from anywhere, or use selected scenarios as on-site assisted experiences where safe, legal, and permitted.
Start with one of five short playable haunted investigations. Each one is designed as a quick Hauntline demo with a map, clues, inventory, entity encounter, and multiple ending paths.
The forest repeats the path of the vanished shepherd. Follow the tally marks, avoid the third blue light, and return the Birch Charm before the ring closes.
The first page is blank until you step inside. Then your name appears in a hand that does not belong to you. Find the Warden’s Ledger before the prison assigns you a cell.
The mansion keeps asking for one more door. Recover the missing blueprints and decide whether to destroy the false room or step through the Door to Nowhere.
Beneath South Bridge, the old vaults remember every footstep. Recover the missing Brass Seal before the under-city echo learns your route.
The ravens are restless, and one black feather has appeared where no raven should have been. Search the Tower for the Raven Key before the prison echo writes your name into the stone.
Hauntline is an interactive horror game engine built for remote play, live locations, and host-led investigations.
Players explore haunted scenarios through choices, maps, journals, inventory, clue reveals, and atmospheric images. Hosts can create custom games using real-world locations, uploaded maps, physical props, and printable event cards.
You can play from home using premade haunted locations, or use Hauntline as a live game companion at a safe, permitted location.
Copy this launch prompt, open Hauntline GPT, and paste it into the chat:
START HAUNTLINE
Mode: Premade Haunted Location
Image Frequency: High
Skip the setup menu.
Show me the premade haunted location options.
Begin when I choose a location.
Hauntline is fictional horror. Real-world safety always comes first.
The horror is fictional. The safety rules are real.
Do not trespass.
Do not enter unsafe buildings or restricted areas.
Do not go near roads, cliffs, water, drains, wells, or unstable ground.
Do not run in darkness.
Do not disturb wildlife, memorials, staff, visitors, or private property.
Only take photos where photography is allowed.
Use physical props only where safe and permitted.
Stay in public, legal, approved areas.