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Steam app 1458900 · updated 12 Sep 2026, 23:32 UTC

Meridian 157: Prologue

Meridian 157: Prologue is the first in a series of point-and-click puzzle adventure games. Play as David Zander, a meteorologist who is investigating a mysterious weather signal on a remote island south of Alaska. Venture toward the remote island to discover the mystery behind the 157th meridian!

Meridian 157: Prologue Steam header artwork
NovaSoft Interactive Ltd.NovaSoft Interactive Ltd.
1playing now
424-hour peak
16all-time peak
1average, last 30 days

The last 30 days

−1.5Gain−57.5%% gain5Peak

29 hourly samples, with the daily peak drawn over them. Weekends are shaded.

0134514 Aug17 Aug20 Aug21 Aug22 Aug24 Aug26 Aug27 Aug12 SepFriday 14 August 20263 peakMonday 17 August 20262 peakThursday 20 August 20261 peakFriday 21 August 20265 peakSaturday 22 August 20261 peakMonday 24 August 20262 peakWednesday 26 August 20261 peakThursday 27 August 20261 peakSaturday 12 September 20264 peak
Daily peakEvery hourly sample

All time

70 months, December 2020 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

0491317Dec 2020Nov 2021Oct 2022Sep 2023Aug 2024Jul 2025Jun 2026December 202016 monthly peakJanuary 202116 monthly peakFebruary 20219 monthly peakMarch 20219 monthly peakApril 202111 monthly peakMay 20217 monthly peakJune 20214 monthly peakJuly 20217 monthly peakAugust 202111 monthly peakSeptember 20217 monthly peakOctober 20217 monthly peakNovember 20218 monthly peakDecember 20217 monthly peakJanuary 20229 monthly peakFebruary 20225 monthly peakMarch 20227 monthly peakApril 20225 monthly peakMay 20224 monthly peakJune 20225 monthly peakJuly 20226 monthly peakAugust 20225 monthly peakSeptember 20224 monthly peakOctober 20225 monthly peakNovember 20226 monthly peakDecember 20225 monthly peakJanuary 20235 monthly peakFebruary 20233 monthly peakMarch 20234 monthly peakApril 20235 monthly peakMay 20233 monthly peakJune 20233 monthly peakJuly 20233 monthly peakAugust 20234 monthly peakSeptember 20234 monthly peakOctober 20234 monthly peakNovember 20232 monthly peakDecember 20234 monthly peakJanuary 20245 monthly peakFebruary 20243 monthly peakMarch 20244 monthly peakApril 20243 monthly peakMay 20249 monthly peakJune 20247 monthly peakJuly 20248 monthly peakAugust 20248 monthly peakSeptember 20246 monthly peakOctober 20246 monthly peakNovember 20247 monthly peakDecember 20244 monthly peakJanuary 20255 monthly peakFebruary 20256 monthly peakMarch 20257 monthly peakApril 20257 monthly peakMay 20257 monthly peakJune 20256 monthly peakJuly 20254 monthly peakAugust 20253 monthly peakSeptember 20256 monthly peakOctober 20254 monthly peakNovember 20253 monthly peakDecember 20256 monthly peakJanuary 20264 monthly peakFebruary 202611 monthly peakMarch 202610 monthly peakApril 20269 monthly peakMay 20268 monthly peakJune 20267 monthly peakJuly 20267 monthly peakAugust 20265 monthly peakSeptember 20264 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

02468July 2026August 2026September 2026October 2026July 20267 peak — daily detail belowAugust 20265 peak — daily detail belowSeptember 20264 peak — daily detail below
Monthly peakHas finer data

July 2026

17 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0246801 Jul03 Jul05 Jul07 Jul09 Jul11 Jul14 Jul22 Jul31 JulWednesday 01 July 20267 peakThursday 02 July 20263 peakFriday 03 July 20264 peakSaturday 04 July 20265 peakSunday 05 July 20263 peakMonday 06 July 20264 peakTuesday 07 July 20263 peakWednesday 08 July 20262 peakThursday 09 July 20264 peakFriday 10 July 20263 peakSaturday 11 July 20264 peakSunday 12 July 20261 peakTuesday 14 July 20262 peakWednesday 15 July 20264 peakWednesday 22 July 20264 peakThursday 23 July 20263 peakFriday 31 July 20261 peak

August 2026

17 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0134501 Aug03 Aug08 Aug11 Aug14 Aug20 Aug22 Aug26 Aug29 AugSaturday 01 August 20262 peakSunday 02 August 20264 peakMonday 03 August 20262 peakTuesday 04 August 20262 peakSaturday 08 August 20261 peakSunday 09 August 20263 peakTuesday 11 August 20263 peakWednesday 12 August 20262 peakFriday 14 August 20263 peakMonday 17 August 20262 peakThursday 20 August 20261 peakFriday 21 August 20265 peakSaturday 22 August 20261 peakMonday 24 August 20262 peakWednesday 26 August 20261 peakThursday 27 August 20261 peakSaturday 29 August 20260 peak

September 2026

4 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0123402 Sep03 Sep09 Sep12 SepWednesday 02 September 20260 peakThursday 03 September 20260 peakWednesday 09 September 20260 peakSaturday 12 September 20264 peak

October 2026

Meridian 157: Prologue was released on 9 Dec, 2020.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Free to playUpdated 12 Sep 2026, 23:32 UTC
App ID
1458900
Last updated
31 Mar 2026 build 22591669
Developer
NovaSoft Interactive Ltd.
Publisher
NovaSoft Interactive Ltd.
Release date
9 Dec, 2020
Platforms
WindowsmacOS
Download size
235 MB231 MB
Install size
247 MB248 MB
Genres
Adventure, Indie
Game modes
Single-player
Controller support
Unknown

Features & support

Steam features

Family Sharing

Controllers & input

Accessibility

Popular tags

AdventurePuzzlePoint & ClickMysteryHidden ObjectHorrorAction-AdventureInvestigationRealistic2DIndieDetectiveLogicThrillerSingleplayerStory RichFree to Play
About this gameFull description from Steam
Inspired by classic room escape and point-and-click games, Meridian 157: Prologue takes you on the journey of forensic meteorologist David Zander. Join Dr. Zander as you investigate a mysterious weather anomaly discovered in a remote island in the northern Pacific Ocean. Use your wits to solve puzzles and overcome obstacles to find a way deeper into the island in order to uncover the mystery behind the 157th meridian! Features: • Custom soundtrack and sound effects designed for a creepy in-game atmosphere • Latest episode continuing a spooky and thrilling storyline • Hard and clever puzzles • A logical hint system for some of the most difficult riddles • Graphics rendered with Unreal Engine • Available in 8 languages, including English, French, Russian, German, Chinese (Mandarin), Spanish, Portuguese and Italian! • New colour blind mode available for people who might have trouble with colour based puzzles
Content & age ratings4 regional ratings

Regional ratings

DEJUSl
ESRBe
IGRS15Rokok dan/atau rokok elektronik, minuman beralkohol, narkotika, psikotropika, dan/atau zat adiktif lainnya
PEGI7
System requirementsMinimum and recommended hardware

Minimum

Minimum: OS *: Windows 7 or higher Processor: Dual Core with Hyper-Threading Memory: 2 GB RAM Graphics: Intel Pro Iris Graphics Storage: 250 MB available space

Recommended

macOS

Minimum: OS: macOS 10.11 or higher Processor: Dual Core with Hyper-Threading Memory: 2 GB RAM Graphics: Intel Pro Iris Graphics Storage: 250 MB available space
Supported languages9 languages
LanguageFull audio
English
French
Italian
German
Spanish - Spain
Japanese
Portuguese - Portugal
Russian
Simplified Chinese

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

1 developer announcement in this snapshot · times in UTC

March

  1. March 31 2026: Meridian Patches

    • Right mouse click goes back to previous scenes • Fixed some issues with camera and cinematic for Windows • Minor bug fixes for MacOS and Windows

    Patch notes

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