Two Keys
The vault of the old Observatory seals forever once the weight-driven clock has run down. One of you is in the Clock Room, the other in the Archive, and the vault door has two keyholes.
- 2–2 players
- Phones only
- The weight-driven clock runs down in 75 minutes
Pay by card through Stripe. Your game link appears right after payment and is also sent to your email.
You opened this page inside an app. Payment and your game link work best in your normal browser: open the menu (••• or ⋮) and choose "Open in browser".

Each of you has your own seat and your own phone: one sees the machinery and the signal lights, the other the drawings, manuals and tables. Neither of you can open a lock alone.
You cannot look at the other screen. Information travels only by talking: one reads, the other works it out, and together you find what neither can see alone.
- Seven different locks: a dial, pipework, a gear train, symbols, signal lights, a star map and two keys
- Exactly two players, each with different information
- Hints for every lock if you get stuck
- All you need is two phones; no shared screen required
At a glance
- Players
- 2–2 players
- You need
- Phones only
- Time
- The weight-driven clock runs down in 75 minutes
- Language
- English
- Price
- €9.90 per group
- Link
- Works for 30 days, on up to 8 phones
How it works
Buy the game
Pay by card. Your game link appears on screen straight away and arrives by email.
Share the link
Send the link to your group or show the QR code. Everyone opens it on their own phone.
Play and talk
Everyone takes a seat and the game begins. Every screen shows different clues, so the locks only open when you talk.
Screenshots


FAQ
Can more than two people play?
No. The game is made for exactly two players, and each has a seat of their own.
What happens when the weight reaches the bottom?
The clock says so, but you can still play to the end.
Do we need an app or an account?
No. The game runs in the phone's browser. Nobody has to download anything or sign up.
How many phones can we use on one purchase?
One purchase is for one group. The player count depends on the game and is shown on its page. The link works for 30 days and can be used on up to eight different phones in total during that time.
How long does the link work?
For 30 days after purchase. You can play as many times as you like during that time.
Do we need internet?
Yes, every phone needs a connection. If a phone loses it for a moment, it keeps playing on its own, and codes bring it back to the same point as the others.
I lost my link. What now?
Request it again on the "Lost your game link?" page. We only ever send it to the email address used for the purchase.
Can I cancel my purchase?
The game link is delivered right after payment. At checkout you ask for immediate delivery and confirm that your 14-day right of withdrawal ends once the link has been delivered. If the game doesn't work as described, contact us. This does not affect your rights if something is wrong with the game.
What will show on my card statement?
The charge appears as REDHERRINGCLUB, the name of the seller's shop: Red Herring Club.