itch.io

The Meridian Signal - a paper mystery for tonight, from DigiiForge.

An abandoned observatory. Seven evidence puzzles. One message to recover. Play solo or with up to three others, using the Letter/A4 dossier and a pen. No host, cutting or physical locks needed. There is a separate hint booklet and an optional offline desktop-browser answer terminal with manual progress saving.

Try the first puzzle free before buying: https://digiiforge.itch.io/the-meridian-signal

The complete download is $4.50 in the Halloween Sale (normally $9), through November 4, 2026 at 1 p.m. Eastern. English, suggested age 14+. Created with AI-assisted writing, illustration, layout and code. No fixed playing time or independent human difficulty rating is claimed.

Hi, I'm William at DigiiForge. The Meridian Signal is our downloadable sci-fi mystery for 1-4 players: an abandoned observatory, seven evidence puzzles, and one message to recover.

You work through reception logs, a star map, assignments and other fictional evidence with paper and a pen. The eleven-page player dossier is separate from the progressive hints and answers, so you can ask for a nudge without opening the whole solution. Letter and A4 editions are included.

Halloween sale: $4.50 (normally $9), through November 4, 2026 at 1 p.m. Eastern. Get the complete game here: https://digiiforge.itch.io/the-meridian-signal

Try one puzzle free before deciding:

US Letter: https://www.digiiforge.com/samples/meridian-prologue-letter.pdf

A4: https://www.digiiforge.com/samples/meridian-prologue-a4.pdf

The prologue includes its answer and needs no email signup.

There is also an optional offline desktop-browser terminal for checking answers and revealing hints. Save progress by manual export. The screenshot below is that actual included terminal, not a concept mockup.

Suggested age 14+, English, digital download only. No fixed playtime or independent human difficulty rating is claimed. The writing, illustration, layout and code were developed with AI assistance, disclosed on the product page.

Questions about the files or setup are welcome. Please keep puzzle answers out of public replies.