Marathon by Most Downloads
Tacticus' M1 Weapons Redux 1.1
General Tacticus on Jul 13th 2017

Hd Replacements for:
Weapons Projectiles Most Items
Notes for version 1.1:
Version 1.1 includes: -tweaked weapon size and position -new animations for rocket and grenade detonation -new bullet impact effect -new trooper grenade projectile -fixed color tables for spht bolt
...and probably some other minor fixes that I forgot about.
2632 downloads, 2 reviews, 8 screenshots, 5.0 rating
HDscenery plugin v1.0
tim4i on Dec 7th 2010
Plugin Version of Visciom 'HDscenery' v1.0 for Marathon.
-For screen shots and details refer to original MOD. -Original Readme enclosed -Released under permission
INSTALL INSTRUCTIONS: 1) Cut & Paste 'HDscenery v1.0.zip' into your 'Plugins' folder in the AlephOne Folder. (Create the folder if you don't have one)
2) Start AlephOne.exe and go to Preferences->Environments->Plugins (Click to Enable/Disable Plugins)
Notes for version v1.0:
Plugin Support Release.
NOTE: THIS IS NOT MY OWN WORK. IT IS A REPACK INTO A PLUGIN WITH PERMISSION FROM THE ORIGINAL AUTHOR(S).
Problems Post on Pfhorums http://www.pfhorums.com/index.php?showtopic=5786&st=20&gopid=86160&#entry86160
2597 downloads, 2 reviews, 0 screenshots, 3.5 rating
Marathon QT2 Tracks for M1A1 1.0
Hopper on Jul 17th 2011
For the first time in digital quality, you can hear Marathon's music as it first shipped in 1994.
The default M1A1 tracks use QuickTime 2.5, released in 1996, which changed some of the instruments. These files were recorded with QuickTime 2.0, which shipped with Marathon, to capture what it sounded like when Bungie first released the game.
2462 downloads, 2 reviews, 0 screenshots, 5.0 rating
Chibi Usa Soundtrack Bonus Edition
ftg.death.rhino on Jun 5th 2013

Now you can hear the Original Marathon Soundtrack in the modern MIDI Instruments for Quicktime! Me sad though, no plugin, no MML script, just replace your Tracks folder with the new one... :'-(
Notes for version Bonus Edition:
It may not be a plugin, and it may not replace on its own, but it has some cool extra stuff, things for newcomers and things for Born on Boards!
2416 downloads, 2 reviews, 1 screenshot, 4.5 rating
M1A1 Netpack 1.0.0
$lave on Dec 10th 2007

M1A1 Netpack Version 1.0
The M1A1 netpack version 1.0 has finally been released coming just short of the goal of 10 maps, it features 8. All maps work with EMFH, while a couple also work for KOTH or KTMWTB. All maps are merged with M1 physics and are ready to be played. Here are the maps:
A Claymaud Patina - KingKidTofu
Scape Goat - KingKidTofu
Bio Mechanical - $lave
Bogyphobia - $lave
Kashmire - $lave
Sit On My Face - $lave
Fatal Attraction - $lave
Flaming Chisels - The Thug
You can check the read me for more details.
Thanks to The Thug and KingKidTofu for contributing maps, and I'd love to see more people contributing in future, enjoy the pack!
2371 downloads, 1 review, 6 screenshots, 5.0 rating
Custom Load Screen for Aleph 1.1
Dodopod on Aug 12th 2009
M1A1 Enhanced HUD Plugin 20120514
Hopper on May 14th 2012
Marathon animated GIFs 1.0
Hopper on Mar 30th 2012
GeoCities may be gone, but the art of the GIF lives on. All multi-frame sequences from the original Marathon Shapes file are included.
2237 downloads, 1 review, 0 screenshots, 5.0 rating
M1A1 Fixes 1.0
Hopper on Jul 18th 2011

M1A1 Fixes is a plugin that makes the scenario a little closer to the original Marathon.
Notes for version 1.0:
This first version has 3 fixes:
Remove the "Pathways into Darkness" opening
Restore the BoBs' soft-death sequences
Limit the player to a single fist (sadly not the left one)
The "No PiD" plugin is not necessary or compatible with this plugin, so please uninstall or disable it before trying M1A1 Fixes.