Credits

Last updated: 10 September 2026

Everything in Lockkeeper Games productions is written, designed and built by Karel van Gelderen. This page is where the people who helped, and the material that came from elsewhere, are acknowledged.

Playtesters

These people played Case 01 before it was ready and told me what was wrong with it. The game is better for every one of them.

Emiel, Janneke, Nathan, Jaap, Peter, another Peter, Britt, Aki, Ella, Jessie, Jos, Zoë, Jeremy, Pieter, Ioanna, Suus, Tom, Stephan, Dennis and Jacob.

Images

Mytilus (ship), 1976

By RWS-Deltadienst. Source: Beeldbank Rijkswaterstaat, via Wikimedia Commons.
Licensed under CC BY 3.0 NL. Adapted for use in Silence of the North Sea.

Footage

Some of the shots in the trailer come from Pexels, whose licence does not require attribution. We name the creators anyway, because their work made the trailer better.

With thanks to †reny aleksa, Steve B, Ivan S, cottonbro studio, utopia 36, Ron Lach, Annushka Ahuja, buba dra, Alexander Grigorian, Artem Podrez, Tima Miroshnichenko, Yaroslav Shuraev, Luis Quintero and melbourne ross.

Something missing?

If you believe your work appears here without proper credit, or the credit is wrong, email hq@lockkeeper.world and it will be corrected.