Mods / Halo3

• EEarthbound - Redeployedby 76561199068277244A complete re-skin/overhaul of the Halo 3 MCC multiplayer map Snowbound. What was once a frozen arctic wasteland, now overgrown with fields of foliage and wildlife.. The battle wages on.. _____________________________________________________________________________________________________________...740 downloadsupdated 14 mo ago
• HHalo 3 with CE Chiefby R93 SniperWhat if Chief went through Halo 3's Campaign but never ditched his Mark 5 armor from Halo CE?733 downloadsupdated 18 mo ago
• CCairo Station H3 Demoby eepeepoopoopDEPRECATED - FULL RELEASE AVAILABLE MOD IS VERY UNFINISHED - WILL END AFTER THE SECOND BAY ENCOUNTER MAKE SURE TO GRAB THE AUDIO FILES HERE Make backups of your english and SFX FMODs in "Halo The Master Chief Collection\halo3\fmod\pc", then replace with the ones in the zip. The entirety of the st...723 downloadsupdated 20 mo ago
• PPlay as a civilanby 76561199103055402Replaces Master Chief in the campaign with a civilian and if playing coop replaces the Arbiter with a civilian709 downloadsupdated 2 y ago
• LLord Hood Boy's Goldmine Multiplayerby SpidermanmanThe Multiplayer Experience This mod adds the goldmine system to halo 3’s multiplayer to deliver lootboxes and traps. This mod features 60+ custom weapons in addition to the original H3 weapon sandbox. Most of the level bsps for this mod have been meticulously edited to expand playable areas by re...706 downloadsupdated 14 mo ago
• HHalo 3 Overpowered Weapons and Vehiclesby 76561199500988272Op Halo 3 Weapons. Be careful yours are Op but so are the enemies.706 downloadsupdated 13 mo ago
• HHalo 3 Reforged Public Testby NomadicAllosaur12This is a test build for my upcoming mod Halo 3 Reforged so expect to run into issues or not fully fleshed out concepts just yet. Any (respectful) feedback will be much appreciated and just a reminder than everything seen here is prone to change in future releases696 downloadsupdated 8 mo ago
• HHALO 3 + ODST Beefier Vanilla Gun Soundsby 76561198838401291THIS PAGE IS A PLACEHOLDER. THE SUBSCRIBE BUTTON DOES NOTHING. Download the mod at the following link: This mod aims to beef up the vanilla gun sounds for Halo 3 while still keeping the distinctive characteristics of the original sounds. Modified weapons now include: Assault Rifle Battle Rifle Br...693 downloadsupdated 3 y ago
• NNuttman's Cortana Revampedby nuttman101Interesting mission to try and mess with. I added in different things without trying to take away the core idea it is mostly only flood and the lore suggesting that.692 downloadsupdated 4 mo ago
• NNight-time on Valhallaby ElectricalSmithChanges the lighting of the map Valhalla to be at night including tracers, bright muzzle flashes, and a beautiful beam tower. Since flashlights are not allowed outside of campaign, the default flashlight available to you is the one on your assault rifle. It will be your new friend as you fight on...691 downloadsupdated 20 mo ago
• SSnowbound AI endless wavesby Caporal BTHello guys i have done my second maps and it's on halo 3 and for this mod i have done a endless wave of unsc vs covenant They will respawn after they dies Have fun :) I've also added new decorations and vehicles to the map Allies: 16 Marines (2 mangooses) 5 Elites 4 ODSTs Covenants: 15 Grunts 14...685 downloadsupdated 18 d ago
• HHALO 3 OG BACKGROUNDby NaseloneOG HALO 3 BACKGROUND PLUG'N'PLAY VIDEO FILE SOURCE: SUB AND LIKE GENERALKIDDS VIDEO! +++GAME RELEASE DOESNT SUPPORT PLUG'N'PLAY BACKGROUNDS YET, USE WORKAROUND+++ 1. go to "\steamapps\workshop\content\976730\2898853463" 2. copy and paste "h3.bk2" into "\steamapps\common\Halo The Master Chief Coll...683 downloadsupdated 4 y ago
• AAI WAR! - COV V UNSC V FLOODby 76561199193507838As of right now, you can only play it in SP. They only respawn in SP mode You and your marines/Elites fight VS. Cov and the flood. ALOT OF BUGS becasue of too many NPCS ( will fix later)678 downloadsupdated 3 y ago
• HHalo 3 But Halo 2 Hardby theHostileNegotiatorHalo 3, but the gameplay environment to be designed like Halo 2 such as AI firing aggressiveness, accuracy and reaction time are tuned to make them hyper. You and your allies are more vulnerable and best of all... more Jackals with Beam Rifles.672 downloadsupdated 14 mo ago
• UUNSC And Elites Vs Floodby 76561199193507838Respawning AI! IN campign only! (since i cant make them repsawn in multiplayer maps..sorry lol) Flood,Unsc units and Elites respawn!649 downloadsupdated 3 y ago
• IInvulnerability (H3)by CalebMakes you invulnerable to all damage. Commissioned by Caleb Created by Crisp Tags included in mod625 downloadsupdated 2 y ago
• PPlayable ODST drop bay (ORBITAL VERSION)by 76561199098032931(VARIANT: orbiting earth, open bay, no holo) Why seperately? well, i'm considerate in the fact there's gonna be goofy goobers who want to keep these seperate and some who got a full drive of data, so, i give the choice as seperate workshop addons and not one that combines all in one. COMMUNITY RE...624 downloadsupdated 13 mo ago
• NNight-time on Sandtrapby ElectricalSmithChanges the lighting of the map Sandtrap to be at night including tracers, bright muzzle flashes, and the Elephant's having functional lights. Since flashlights are not allowed outside of campaign, the default flashlight available to you is the one on your assault rifle. It will be your new frien...611 downloadsupdated 20 mo ago
• TThe Graveyard - MediEvil PS1by Glitch5970The Graveyard from MediEvil for the PS1 ported to Halo 3! Uses the PS4 remake Sir Daniel Fortesque as the custom playermodel!603 downloadsupdated 14 mo ago
• HHalo 3 - Q3DM16by What_ZenA port of Quake 3's Q3DM16 by me. Will be updating with balance tweaks and the like soon. I've been porting maps to Halo 3 for a little while now, I have a Patreon to help support my efforts to port as many maps from old game titles as possible. I will be releasing a map every month from now on,...596 downloadsupdated 4 y ago
• HHalo 3: But All Heavy Ammunitionby Zealot○ModdingIt's Halo 3, but this time everyone came prepared. All weapons, (most) turrets and vehicles have been loaded with high explosive rounds. Human weapons all fire rockets, the covenant, in response upgraded all of their arsenal to fire self propelled plasma bombs! This is not a cake walk, you may be...594 downloadsupdated 7 mo ago
• TTemple from Perfect Dark - Halo 3by Ham PorkerPerfect Dark's Temple in Halo 3. Supports all gamemodes. Recommended players 3-8.592 downloadsupdated 4 y ago
• AA elite campaignby 76561199379038674play as a elite and honestly this mod aint good positive ratings 29 negative ratings 4 88% positive last updated tuesday october 13573 downloadsupdated 11 mo ago
• MMonitor campaign solo third personby xxreplicatorsPlay as 343 guilty spark on all maps dialog: use the grenade buttons switch to use them as well as the flashlight button skulls will crash the game! guns have infinite ammo by default. Known bugs: May have a random crash on start up or using the blue beam gun, if you can fire the blue gun and it...564 downloadsupdated 11 mo ago
• Bbig ai wars outdatedby 76561199031514953outdated new version is out561 downloadsupdated 18 mo ago
• JJackal campaign in third personby xxreplicatorsPlay as a Kig-Yar on all the primary halo 3 levels made some weapon adjustments. This is a WIP project and may have bugs and some stuff will not always work right like some vehicles, abilities, melee, grenades. If something is game breaking to the point that you cant progress through the level pl...558 downloadsupdated 13 mo ago
• DDam (Halo 3)by EpicPerryCut Halo 3 Map Imported for you to play.551 downloadsupdated 3 y ago
• NNo Cortanaby wiertj91Removal of Cortana and Gravemind moments from the campaign. A thing to note, that on the level Cortana, after you save Cortana, she will no longer tell you to destroy the reactor room.532 downloadsupdated 3 y ago
• HHalo 3: The Buttonby 76561198795090374Come see what the button master has in store for you and your "friends" This is the real mod from the hit viral youtube video Halo 3: The Button which has millions of views525 downloadsupdated 10 mo ago
• HHeretic (Early Version)by EpicPerryEarly version of Heretic found inside of Halo 3 ODST's Editing Kit.515 downloadsupdated 3 y ago
• AArk generate elite, marines（方舟生成精英，陆战队）by 76561198886558094base、outskirts、Storm、Flood Gate、Ark generates elite, Marines, pistol (elite), splinters grenade (human), elite is not easy to kill, remember to go to "Settings", "voice", change to English when entering the game, you can enter the game, if ammunition is not enough, you can go to the "mission" opt...513 downloadsupdated 4 y ago
• HHalo 3 - GreenScreensby What_ZenA simple greenscreen and sister bluescreen room setup for video editing. bloom has been disabled so that light doesn't bleed into the armor. Has a full forge pallete that you can use to hold or use whatever you need. Will be updating this with feedback from you guys, so keep an eye out!489 downloadsupdated 13 mo ago
• FFlood Gate generate elite, marines（防洪闸门生成精英，陆战队）by 76561198886558094base、outskirts、Storm、Flood Gate、Ark generates elite, Marines, pistol (elite), splinters grenade (human), elite is not easy to kill, remember to go to "Settings", "voice", change to English when entering the game, you can enter the game, if ammunition is not enough, you can go to the "mission" opt...487 downloadsupdated 4 y ago
• MMachinima Greenscreens and Lights Collectionby eepeepoopoopHalo 3 Machinima Greenscreens and Lights By PepperMan A fairly straightforward forge mod - includes a large variety of green-screens (blue on the other side!), as well as many coloured lights, with normal, blinking, flickering and spotlight modes. Greenscreens are fully forgeable - don't forget t...481 downloadsupdated 20 mo ago
• DDiamondback - AI Endless War Revampedby 76561199174441762So yeah, the first anniversary of this mod. Initially, the map was meant only to be played by myself, but at the time I made the "mistake" of publishing this mod to the official workshop and making it so it could also be played by others. Some months passed until April 2026 came, when I noticed t...473 downloadsupdated 1 mo ago
• WWarthog Inc (Halo 3)by EpicPerryThe favored "Warthog Inc" has finally been released via the Halo 3 ODST Editing kit. This is just the map compiled for your pleasure for Halo 3464 downloadsupdated 3 y ago
• HHalo 3: But all Chieftains with Gravity Hammersby Zealot○ModdingThe age of the Chieftains has begun. From Doisac's blood-red plains they march, each a mountain of muscle, each wielding the weapon of kings. The air trembles beneath the swing of their Gravity Hammers, thunder echoing through shattered halls. There are no packs now, only warlords, each strike a...460 downloadsupdated 12 mo ago
• HHalo 3 with Colored Brute Ranksby N8endoI've just uploaded a new and improved version of this mod! I encourage you to switch over to the new version, which can be found here: And here's a new version I made for ODST: Of course, if you prefer this color scheme, you can stick with this version. Finish the fight while being able to recogn...457 downloadsupdated 14 mo ago
• UUNSC V COVENANTby 76561199193507838UNSC V COVENAT! Respawning ai (campaign only!)447 downloadsupdated 3 y ago
• MMinecraft Collectionby 76561199007201709A collection of various minecraft maps ported to MCC MAPS Christmas Holiday Hungergames: Original map by @-Random, built for minecraft ps3 edition. Amazon: A map by me and @cyanpumpkin33. Don't remember how we came up with the name as there are no trees on the map. Minotaurus: A map by me, based...421 downloadsupdated 20 mo ago
• HHL_Stalkyardby 76561199068277244Stalkyard: A Half-Life Full Conversion __________________________________ Prepare to see the MJOLNIR armor replaced by the HEV suit. Welcome to Stalkyard, a meticulously crafted love letter to Valve’s legendary shooter, rebuilt from the ground up. This isn't just a map swap, it’s a total conversi...419 downloadsupdated 8 mo ago
• SStorm generate elite, marines（在风暴生成精英，陆战队）by 76561198886558094base、outskirts、Storm、Flood Gate、Ark generates elite, Marines, pistol (elite), splinters grenade (human), elite is not easy to kill, remember to go to "Settings", "voice", change to English when entering the game, you can enter the game, if ammunition is not enough, you can go to the "mission" opt...415 downloadsupdated 4 y ago
• 33LONGATIONby 76561199068277244"A well-placed bribe can speed a cargo ship through what are surely some of the longest inspections in the galaxy." ____________________________________________ - The classic Halo 2 Multiplayer map Elongation ported into Halo 3! - Rebuilt from the ground up, with all game-types fully restored! EN...415 downloadsupdated 11 mo ago
• HHalo 3 Menu Videos (Muted)by Crunchy MaggotsA modification of Cryosphered's Halo 3 Menu Videos, but with the audio tracks removed from the video files for a seamless experience in MCC's menus. Contains Halo 3's various menus, recorded from MCC in 1440p. Original versions with SFX:413 downloadsupdated 6 mo ago
• OOriginal Thumbnails for Halo 3by Doggycrap55This reverts Halo 3's level thumbnails to what you would see on the xbox 360. Sorry this one took longer to make than the others, I took my own screenshots using theater mode to get high resolution images for the loading screens (the og ones are too small to use), all the while trying to stay as...398 downloadsupdated 7 mo ago
• HHalo 2 Brute Campaignby 76561198823648857Play as a halo 2 brute in halo 3 credit to gamecheat13 for tags first mission first checkpoint is bugged398 downloadsupdated 3 mo ago
• WWarthog Warby LDOwenChaos ensues.392 downloadsupdated 2 y ago
• Ddrone campaignby 76561199379038674ready to rage quit without even playing for 40 minutes? play as a drone that just exists i do not know how to code which is why you cant go from flight to grounded anytime this is not ment to be a normal difficulty campaign its ment to be a challenge382 downloadsupdated 10 mo ago

409 halo3 mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.