Buy directly · Online murder mystery
Blackwater on
Calder Nine
A locked radio room. Six suspects.
A killer still aboard.
A storm has cut off a North Sea oil platform. Explore its rooms, question the crew and uncover who killed safety inspector Ruth Ainsley.
Play in your browser. No app, printer or game master needed.
Secure Stripe checkout · Digital game · No physical item
Your case briefing
At 02:24, safety inspector Ruth Ainsley was found dead in a locked radio room on Calder Nine. A storm grounded the helicopter. Six people aboard had reasons to fear her report.
You are reviewing a reconstruction of the platform after the incident. Walk through connected rooms, collect records and determine who killed Ruth, why, with what, and how they left the room.
How you play
Inspect objects to collect evidence, question the pictured crew and use the deck blueprint to navigate. Compare your discoveries, make four deductions and submit your accusation. Play alone or share one browser with your team.
What you receive
Access to the online Blackwater on Calder Nine investigation. This is a digital game; no physical item will be delivered. No app, account, printer or game master is required. An internet connection is needed.
Saving your case
Progress and notes save in the browser when local storage is available. Return on the same device and browser to continue. Clearing browser data or using private browsing may prevent progress from being retained.
Player guidance
1–4 players · Approximately 60–90 minutes · Ages 12+. The story concerns a fictional murder. For personal play; please do not redistribute the game or access link.
Payment is handled securely by Stripe. Any applicable taxes or currency conversion are shown at checkout.