STEAMDB NEXUS

Steam app 2398520 · updated 13 Sep 2026, 00:10 UTC

Classic Marathon Infinity

From the team that brought you Aleph One, the classic sci-fi FPS Marathon Infinity from Bungie on Mac revived for modern hardware by the fan community.

Classic Marathon Infinity Steam header artwork
Aleph One DevelopersAleph One Developers
8playing now
824-hour peak
37all-time peak
3average, last 30 days

The last 30 days

+0.2Gain+5.9%% gain13Peak

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

047111414 Aug19 Aug24 Aug29 Aug03 Sep08 SepFriday 14 August 20268 peakSaturday 15 August 20266 peakSunday 16 August 20268 peakMonday 17 August 20267 peakTuesday 18 August 20264 peakWednesday 19 August 20267 peakThursday 20 August 20268 peakFriday 21 August 20266 peakSaturday 22 August 20266 peakSunday 23 August 202613 peakMonday 24 August 20266 peakTuesday 25 August 20268 peakWednesday 26 August 20267 peakThursday 27 August 202611 peakFriday 28 August 202610 peakSaturday 29 August 20265 peakSunday 30 August 20268 peakMonday 31 August 20267 peakTuesday 01 September 20267 peakWednesday 02 September 202610 peakThursday 03 September 20266 peakFriday 04 September 20267 peakSaturday 05 September 20269 peakSunday 06 September 20268 peakMonday 07 September 20266 peakTuesday 08 September 20269 peakWednesday 09 September 20265 peakThursday 10 September 20266 peakFriday 11 September 20264 peakSaturday 12 September 20268 peak
Daily peakEvery hourly sample

All time

26 months, August 2024 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.

010203040Aug 2024Dec 2024Apr 2025Aug 2025Dec 2025Apr 2026Aug 2026August 202437 monthly peakSeptember 202425 monthly peakOctober 202413 monthly peakNovember 202412 monthly peakDecember 202410 monthly peakJanuary 20258 monthly peakFebruary 20259 monthly peakMarch 20259 monthly peakApril 202523 monthly peakMay 202514 monthly peakJune 202510 monthly peakJuly 202513 monthly peakAugust 20259 monthly peakSeptember 20259 monthly peakOctober 20257 monthly peakNovember 20259 monthly peakDecember 20259 monthly peakJanuary 202611 monthly peakFebruary 202618 monthly peakMarch 202617 monthly peakApril 202615 monthly peakMay 202611 monthly peakJune 202610 monthly peakJuly 20268 monthly peakAugust 202613 monthly peakSeptember 202610 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.

0471114July 2026August 2026September 2026October 2026July 20268 peak — daily detail belowAugust 202613 peak — hourly detail belowSeptember 202610 peak — hourly detail below
Monthly peakHas finer data

July 2026

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

0246901 Jul06 Jul10 Jul14 Jul19 Jul25 Jul29 JulWednesday 01 July 20266 peakFriday 03 July 20266 peakSaturday 04 July 20265 peakSunday 05 July 20265 peakMonday 06 July 20267 peakTuesday 07 July 20266 peakWednesday 08 July 20266 peakThursday 09 July 20267 peakFriday 10 July 20268 peakSaturday 11 July 20266 peakSunday 12 July 20267 peakMonday 13 July 20267 peakTuesday 14 July 20265 peakWednesday 15 July 20266 peakThursday 16 July 20266 peakSaturday 18 July 20265 peakSunday 19 July 20264 peakMonday 20 July 20263 peakThursday 23 July 20266 peakFriday 24 July 20266 peakSaturday 25 July 20266 peakSunday 26 July 20265 peakMonday 27 July 20265 peakTuesday 28 July 20265 peakWednesday 29 July 20265 peakThursday 30 July 20266 peakFriday 31 July 20265 peak

August 2026

29 days as the curve, each the highest figure that day. Behind it, 159 hourly samples from 14 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

047111401 Aug05 Aug10 Aug15 Aug19 Aug23 Aug27 Aug31 AugSaturday 01 August 20264 peakSunday 02 August 20268 peakMonday 03 August 20266 peakTuesday 04 August 20266 peakWednesday 05 August 20261 peakThursday 06 August 20264 peakFriday 07 August 20267 peakSaturday 08 August 20268 peakMonday 10 August 20264 peakWednesday 12 August 20263 peakThursday 13 August 20266 peakFriday 14 August 20268 peakSaturday 15 August 20266 peakSunday 16 August 20268 peakMonday 17 August 20267 peakTuesday 18 August 20264 peakWednesday 19 August 20267 peakThursday 20 August 20268 peakFriday 21 August 20266 peakSaturday 22 August 20266 peakSunday 23 August 202613 peakMonday 24 August 20266 peakTuesday 25 August 20268 peakWednesday 26 August 20267 peakThursday 27 August 202611 peakFriday 28 August 202610 peakSaturday 29 August 20265 peakSunday 30 August 20268 peakMonday 31 August 20267 peak

September 2026

12 days as the curve, each the highest figure that day. Behind it, 117 hourly samples. Each dip is a night. Weekends are shaded.

03581101 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 20267 peakWednesday 02 September 202610 peakThursday 03 September 20266 peakFriday 04 September 20267 peakSaturday 05 September 20269 peakSunday 06 September 20268 peakMonday 07 September 20266 peakTuesday 08 September 20269 peakWednesday 09 September 20265 peakThursday 10 September 20266 peakFriday 11 September 20264 peakSaturday 12 September 20268 peak

October 2026

Classic Marathon Infinity was released on 22 Aug, 2024.

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 13 Sep 2026, 00:10 UTC
App ID
2398520
Last updated
29 Aug 2025 build 19789780
Developer
Aleph One Developers
Publisher
Aleph One Developers
Release date
22 Aug, 2024
Platforms
WindowsmacOSLinux
Download size
32 MB37 MB31 MB
Install size
74 MB88 MB78 MB
Genres
Action, Free To Play
Game modes
Single-player, Multi-player, PvP, Online PvP, LAN PvP, Co-op, Online Co-op, LAN Co-op, Cross-Platform Multiplayer
Controller support
Partial
Achievements
13

Features & support

Steam features

Steam AchievementsSteam WorkshopSteam CloudFamily Sharing

Controllers & input

Partial Controller Support

Accessibility

Popular tags

FPSPvPPvEShooter2.5D3DFirst-PersonActionLinearStory RichSci-fiSpaceAliensFuturisticCo-opMultiplayerSingleplayerFree to PlayOnline Co-OpBoomer Shooter
About this gameFull description from Steam
Marathon Infinity takes the closed universe of the Marathon series and blows it wide open. The solo/co-op campaign, “Blood Tides of Lh’owon,” is a 20-level scenario sporting new textures, weapons, and enemies. More than that, the scenario sheds a surprising new light on the story’s characters and the meaning of events. Having defeated the Pfhor and reawakened the ancient remnants of the S’pht, the player now faces a world where friends become enemies and all is not what it seems… This classic 1996 Bungie™ FPS is now maintained by the fan community. Experience authentic game play using the original data files, with optional widescreen HUD support, 3D filtering/perspective, positional audio, and 60+ fps interpolation, just in case the original is too authentic. Marathon Infinity is powered by the Aleph One engine, which is available under the terms of the GNU General Public License (GPL) Version 3.
Content & age ratings2 regional ratings

Regional ratings

DEJUS14Violência
IGRS18Kekerasan · Interaksi Daring
System requirementsMinimum and recommended hardware

Minimum

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: 64-bit Processor Memory: 4 GB RAM Storage: 100 MB available space

Recommended

Recommended: Requires a 64-bit processor and operating system

macOS

Minimum: OS: macOS High Sierra Processor: Apple M1 or Intel Core M Memory: 4 GB RAM Storage: 100 MB available space Recommended:

Linux

Minimum: Processor: 64-bit Processor Memory: 4 GB RAM Storage: 100 MB available space Recommended:
Supported languages1 languages
LanguageFull audio
English

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

Screenshots & trailersScreenshots and trailers
Classic Marathon Infinity screenshot 1Classic Marathon Infinity screenshot 2Classic Marathon Infinity screenshot 3Classic Marathon Infinity screenshot 4Classic Marathon Infinity screenshot 5Classic Marathon Infinity screenshot 6Classic Marathon Infinity screenshot 7Classic Marathon Infinity screenshot 8

Trailers

AchievementsTotal count and selected achievements

13 achievements in total.

Show selected achievements (may contain spoilers)
I Know Who You AreAchievement
I Totally Know Who You AreAchievement
Meet the New BossAchievement
RoadrunnerAchievement
My Personal PeonAchievement
A Show of Good FaithAchievement
More Than One PathAchievement
Chapel GroanAchievement
Monsters In Dreams AssassinAchievement
Film BuffAchievement

View all Steam achievements

4 developer announcements, Aug 2024 to Aug 2025 · times in UTC

August

  1. Aleph One 1.11

    This release is not network compatible with the previous release, and films saved with this release cannot be played back with older releases.Highlights:Native Steam Linux supportAudio improvementsAdditional sprite rendering option for 3D…

    treellama
  2. Aleph One 1.11b Beta Test

    Please help test this beta release. It is not network compatible with the previous release, and films cannot be played back with older releases.Highlights:Native Steam Linux supportAudio improvementsAdditional sprite rendering option for 3D…

    treellama

March

  1. Aleph One 1.10.1

    Classic Marathon Infinity has been updated to use Aleph One 1.10.1. This is a bug fix release. Highlights: Uses HUD filtering preference for Lua HUD images Physics file is no longer mandatory for gathering using dedicated servers It is now…

    Patch notes

August

  1. Classic Marathon Infinity Hotfix

    We have posted an update to fix an issue where BoB could invalidate the the Chapel Groan achievement. Traitorous Pig! If you had trouble getting the achievement before, resume from a game saved in a prior level and try again.

    Patch notes

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