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Sender Unknown DemoEventsWe are joining the Steam Next Fest!
Esports

We are joining the Steam Next Fest!

Sender Unknown Demo · published 15 Jun 2026, 18:27 UTC

All eventsPlayers around this dateRead on Steam

Hello everyone!



Steam Next Fest has officially kicked off today and runs until June 22nd. We are incredibly excited to announce that we are participating with our two brand-new demos of Sender Unknown & Murder Castle this year!

Head over to the store pages to download the demos right now. Please let us know what you think by leaving a review, your feedback means the world to us.

https://store.steampowered.com/app/4802450/Sender_Unknown_Demo/
https://store.steampowered.com/app/4652010/Murder_Castle_Demo/
If you enjoy the games, adding them to your wishlist would be a huge support!
Have fun playing!

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Sender Unknown DemoGame update2 Jul 2026Demo Hotfix #1Hello everyone! We've just pushed a small hotfix for the demo with the following changes: · Corrected an issue where the cooking pot displayed the wrong name · Fixed missing font characters for the Chinese and Japanese localizations · Improved the physics when carrying a package to make handling feel more natural Thank you for playing and sharing your feedback!Esports20 Jun 2026Next Fest Demo LivestreamHello everyone! Today, the 20.06 at 8:45pm (CEST) we will stream the demo of our two new games Sender Unknown & Murder Castle here on Steam. Feel free to tune in and chat with us! Ask us questions about the development and what's to come! We would be happy to see you! If you enjoy the games, adding them to your wishlist would be a huge support! Have fun playing!News5 Jun 2026Demo out now!Hello everyone! We just released the official demo for our new game Sender Unknown! It’s a horror job simulator where you take on the stressful shift of a parcel inspector in an underground sorting facility. Weigh packages, look out for deadly anomalies, and try to survive the night. We've put a lot of love into building these mechanics and can't wait to hear your feedback. Feel free to leave a…