Mods / Halo3ODST

• HHalo 3: Combat Evolved - Campaignby 76561198397976830Halo 3: Combat Evolved - Campaign As of March 2026, this mod is no longer being worked on. Halo 3: Combat Evolved is a mod for Halo 3: ODST that aims to re-create the Halo: Combat Evolved Multiplayer and Campaign experiences within Halo 3: ODST's engine. Looking for the Multiplayer? The Multiplay...78.0k downloadsupdated 9 mo ago
• HHalo New Covenantby kaboose1066A campaign mod for Halo 3 ODST, Halo New Covenant takes you on a journey after the events of Halo 3 in a new direction. The campaign includes: Custom missions designed from scratch Custom cinematics Custom voice acting Full up to 4 player coop support Instructions: (MCC MUST BE SET TO ENGLISH WIT...56.5k downloadsupdated 21 mo ago
• GGashnor's Cursed Halo 3 ODST Campaign and Firefight 2.4.1by GashnorNOTE: IF PLAYING CO-OP, VERIFY ALL PLAYERS SEE v2.4! IT WILL CRASH OTHERWISE Welcome to Gashnor's Cursed Halo 3: ODST! An original taking on the "Cursed" genre for Halo 3: ODST's campaign, now fully overhauled to 2.0! A chaotic and funny experience, trying to keep every concept original to my own...51.3k downloadsupdated 14 mo ago
• HHalo 3 ODST Mythic Overhaulby MythicJaquiThis mod is a complete sandbox overhaul for Halo 3 ODST. The goal of the mod is to expand the sandbox and provide more gameplay variety for ODST. You'll find new weapons, run into new encounters and enemies, and experience a fresh take on the game. Not every firefight map could be included with h...33.7k downloadsupdated 14 mo ago
• HHalo: Prevaricationby EvilPie118News in Discussions - Link to Discord channel for extended news: **Please check the Change Notes** **Game language MUST be set to English** Halo: Prevarication Enter The Nightmare Halo: Prevarication is a custom original campaign built on the Halo 3:ODST engine, utilizing Cutscenes, Voice Dialogu...18.8k downloadsupdated 4 mo ago
• HHalo 3: ODST - True Rainby GoldAthena>> INCLEMENT WEATHER << WEATHER ADVISORY // PACK AN UMBRELLA! True Rain is an increased rain mod for Halo 3: ODST. ODST's rain aesthetic is legendary, but the actual AMOUNT of rain on screen was very low, a product of the limited hardware of the Xbox 360. This how it would look with the intended...13.0k downloadsupdated 12 mo ago
• Ddeadkiva7's Halo 3: ODST Firefightby 76561198847562797This mod adds new firefight maps to Halo 3: ODST while keeping the game mostly vanilla. There is 16 firefight maps included! Map List Courtyard, Courtyard (night), Drop Zone, High Ground, Hydro, Hydro (night), Isolation, Lost Platoon (night), Plaza, Plaza (night), Rats Nest, Roundabout, Roundabou...10.0k downloadsupdated 10 mo ago
• OOutbreak Firefight - Halo 3: ODSTby WhopFight with your back against the wall...9.9k downloadsupdated 20 mo ago
• BBeached Firefight - Halo 3: ODSTby WhopFight for your life on the beach... PLEASE READ DESCRIPTION!!! A firefight map taking place on the start of Halo 3's mission: The Covenant. Enabling boons activates a set of scripts that sets up a war-like mode for the game. The main highlights of war mode is the featuring of pelicans flying arou...9.4k downloadsupdated 13 mo ago
• ((UPDATED) Remember Reach - Halo 3: ODST Firefight Packby RynoA collection of Reach maps ported into Halo 3: ODST's firefight. The maps Holdout, Outpost, Installation 04, Corvette, and Courtyard have been ported into ODST. These maps are compatible with ODST's full suite of custom game options and modes including Floodfight and map boons. Starting weapons h...9.3k downloadsupdated 14 mo ago
• HHalo Great Schism Editionby The Winter WolfThis mod will try to recreate the fight between the Brutes and the Elites for the control of New Mombasa You will be able to see how the followers of the Brutes and Elites fight each other to be able to conquer the city, take advantage of these confrontations and kill the remnants or face everyon...9.3k downloadsupdated 13 mo ago
• OODST 457's campaign overhaulby PotterHaloThis is a new Halo 3 ODST campaign and firefight with more variety of weapons, vehicles, NPCs, improvements, etc.8.4k downloadsupdated 14 mo ago
• HHalo 3: ODST "Realism" Rebalanceby ThornierlambExperience this epic campaign with a more realistic approach to the gameplay! PSA ONLY HEROIC DIFFICULTY IS BALANCED!! THIS IS INTENDED TO BE A UNIFIED EXPERIENCE Feedback is appreciated! HOW TO INSTALL: Simply subscribe on the workshop page and launch the game with eac disabled to activate the m...7.1k downloadsupdated 12 mo ago
• HHot Drop Firefight Packby ShmeeGrimPrepare to drop into all new Firefight scenarios, featuring newly updated Goliath Firefight, and the all-new Homefront Firefight. GOLIATH FIREFIGHT: Set in the heart of the New Mombasa Data Center, Goliath Firefight offers an intense close-quarters combat experience that will keep you on your toe...7.1k downloadsupdated 8 mo ago
• DDigsite ODST Campaignby General HeedThree cut early versions of Halo 3 ODST campaign missions. Mombasa Streets (h100) - An early prototype version of h100 from Halo 3 ODST, officially known as Mombasa Streets. This hub map features a very early version of the city and features 2 objectives and multiple cinematics linking to the oth...6.9k downloadsupdated 13 mo ago
• TTacticool ODSTby 76561199022141909A reanimation of the ODST sandbox. This was supposed to be a quick practice for me and I ended up reanimating the whole weaponry of ODST. I'm currently working on other mods so although I'm not too happy with some animations, it is enough for now. Thanks everyone who has enjoyed it, gave feedback...6.8k downloadsupdated 13 mo ago
• HHalo 3 ODST Lack's Campaignby 76561198348525569Halo 3 ODST: Lack's Campaign WHAT IS THIS MOD? This is a mod for Halo 3 ODST that features some visual and gameplay changes. It features additional weapons, adjustments to character models, tweaked weapons, and some visuals have been adjusted as well. My goal with this mod was to keep the vanilla...6.6k downloadsupdated 5 mo ago
• HHalo 3: ODST Kat's Campaignby KatherlynOh, another one of those "Rebalance" mods. This mod does not add any and everything from every Halo game. Instead it focuses on "improving" (in my opinion of course), the base game. Meant to be played on Heroic. General: -Carry more ammo and grenades -AI now do more 100% damage against each other...6.3k downloadsupdated 14 mo ago
• Hhalo odst civil war editionby EpicAnimationNipple-------------------------INTRO--------------------------------------- odst is one of my favorites but really hard to mod recommended to play in legendary use enhanced graphics -------------------------level progression--------------------------------------- level progression has been fixed now, s...6.0k downloadsupdated 5 mo ago
• Hhalo 3 odst - Campaign Forgeby 76561198417014698IMPORTANT to see hands, you need to set the player customisation character to the Rookie. to play on unsc team, be on green team. don't skip cinematics, will remove fx sounds and might crash the game. mod includes all default forge stuff and: somewhat working level progresion (cinematics, ai batt...5.9k downloadsupdated 3 y ago
• HHalo 3 ODST Multiplayer Mapsby KrevilHalo 3's Multiplayer maps in ODST Contains the following maps: Rat's Nest Ghost Town Standoff Narrows Construct The Pit High Ground Guardian Isolation Valhalla Epitaph Sandtrap Snowbound Foundry Last Resort Additional DLC maps have been omitted due to their ODST versions being incomplete or havin...5.8k downloadsupdated 14 mo ago
• HHalo 3 DOOMby Tim Allen GamingStep Into Hell With Halo 3: DOOM. Play E1M1 in Halo 3: ODST. 1. You must own Halo 3: ODST on Steam 2. Subscribe to the mod 3. Launch Halo: The Master Chief Collection with anti-cheat off Links: To support my content. This makes the development of maps possible and allows me to create more. Credit...5.2k downloadsupdated 3 y ago
• SSierra 117 - ODST Nighttimeby 76561198417014698HEY IMPs, this mod ports the halo 3 campaign to the odst engine and sets it to nighttime. some extra changes too. The player is refered as chief cause he the chief of ODSTs or smth like that. That or u could say everyone has dementia and think u the chief. I recommend to play on heroic if you see...4.8k downloadsupdated 20 mo ago
• MMarine Firefightby DrearyMussell5Survive waves of Covenant and Flood as a member of the UNSC Marine Corps. Fair warning, this mod will have you playing in third person, and with less health than in base game. It is, in my opinion, best played on Heroic or Legendary. Notes: - Currently Oni Alpha Site and Rally (Night) do not work...4.7k downloadsupdated 14 mo ago
• OODST XLby ShadowedHalo: ODST campaign with hordes of AI for large battles and challenging coop. AI changes: - 4x more AI when allowed, excluding engineers. - AI will provide suppressing fire at extreme ranges with their weapons. - Marines get a small health buff. - Hunters get a small health nerf. Weapon changes:...4.7k downloadsupdated 14 mo ago
• HHalo 3: ODST Main Menuby 76561198330463364Original Halo 3: ODST Main Menu in high quality with music. Includes all music tracks from the original menu, and a bonus track from firefight at the end. How to use: Open MCC settings -> Video -> Configure Backgrounds -> Main Menu Background (or any background) and select Halo 3: ODST Menu from...4.3k downloadsupdated 3 y ago
• TThe Pit Firefightby 76561198381261086A Halo 3 multiplayer map "The Pit" in Halo 3 ODST with a custom firefight gamemode. Features several new enemy types, weapons and more. Fight alongside Marines and ODST characters from the campaign against endless waves of Covenant enemies. Features: - Custom Firefight mode with waves that go up...4.2k downloadsupdated 20 mo ago
• HHalo 3 ODST Animated Campaign Backgroundby SpingiIf you like the video used, I Made it available as a wallpaper in WALLPAPER ENGINE ( ) Replaces Halo 3 ODST MCC Campaign, and Firefight backgrounds with a Custom 3D Animated Rookie. The Background has been made from scratch with blender and composited with after effects. Works well with 21:9 and...3.6k downloadsupdated 3 y ago
• RResurrection Revamp ODSTby FunnyAnywayI now have a Patreon! This mod also has all the additions and new vehicles added to Firefight as well as new AI that are only in Firefight! A sequal to my Resurrection Revamp mod for Halo 3 ( This mod incorporates everything from my original RR mod and a whole lot more, into ODST. It is made with...3.5k downloadsupdated 14 mo ago
• HHalo 3: WORT (Playable Elites in ODST)by JerryWort wort wort! Features: - A juryrigged version of playing as an elite in H3:ODST is now possible (Please read first question below) - Cutscenes are completely untouched. - You are now as fast as a halo 3 spartan/elite. - Player elite shields and health is on par with an ODST (115 and 45 VS 80 a...3.5k downloadsupdated 8 d ago
• CChasm 34by 76561198397976830Chasm 34 Chasm 34 is a remake of Halo: Combat Evolved's "Chiron TL-34" inspired by ODST's "Data Hive" Campaign mission How to Play After subscribing to the mod you'll have to restart MCC if it's open and launch with the anti cheat disabled option. Afterwards navigate to MULTIPLAYER > CUSTOM GAMES...3.4k downloadsupdated 14 mo ago
• HHalo 3 ODST: Civilityby igetmutedeverygameThe dark showers welcome you with cold unflinching arms. Step into the boots of a middle-class metropolitan-- locked in a fight of survival as you investigate, uncover, and reunite with your squad. You may not be an ODST-- yet-- but you might have what it takes to become one. Donned in your polic...3.4k downloadsupdated 12 mo ago
• RResurrection Revamp Halo 2 ODSTby FunnyAnywayI now have a Patreon! On my Patreon I will be showing progress of this project. This is a continuation of my Resurrection Revamp mods. This is a project I am calling Halo 2 ODST. It follows the events of Halo 2 from the perspective of new characters with a large amount of my own gameplay changes...3.4k downloadsupdated 14 mo ago
• TThe Storm - ODST Nighttimeby 76561198417014698This mod focuses on ambient and just kept things simple. player is refered as chief cause he the chief of ODSTs or smth like that. I learned a lot since i did Jhonson bed time story, I now know how to make proper nightime levels and learned better methods for many stuff. if you see random flashin...3.1k downloadsupdated 20 mo ago
• OODST missions - Homefleet campaignby 76561198417014698this mod is a mission for my custom campaign, but I don't have any plans on working on it any time soon. So I am releasing them (Even tho they are still half-assed) because I don't want them to rot in my drive. I would recommend having Acrophobia skull always on, these mission can bug very easily...3.0k downloadsupdated 20 mo ago
• HHalo 3 ODST: Tactical [Beta 0.2.8]by NSixNickIMPORTANT Halo 3 ODST currently has an issue where modded campaigns don't work as intended and as such the file size of this mod has been greatly bloadted. A smaller version of this mod will be uploaded later on when it is more complete. Halo 3 ODST: Tactical overhauls the core sandbox of ODST by...2.7k downloadsupdated 9 mo ago
• JJohnson Bedtime Storyby 76561198417014698So, what if our favorite Sergeant told how the war was won according to him? And of course he told it as we saved everyone ass! IMPORTANT I added health packs thought the level, but on the final indoor section there is 1 and some brute regeneration equipment. Johnson is a beast on bed. Scorpion n...2.7k downloadsupdated 3 y ago
• HHalo 3 ODST Marine Editionby Marshall the oneHalo 3 ODST but you're a marine. Lights are added on weapons to replace visor mode. Some cutscenes have marines in them now, I couldn't change all of them cause of game engine issues. Added dual wielding If you want to play firefight replace the vanilla maps with my modded ones. D:\SteamLibrary\s...2.5k downloadsupdated 3 mo ago
• OOperation Nightfallby Darkstar6423™Take back a UNSC military installation that is currently occupied by covenant remnants. The Office of Naval Intelligance wants this done quietly and out of the public eye. Stealth is not optional First Mission: Discovery Venture through the dense forest to locate an entrance to the base. Images f...2.2k downloadsupdated 11 mo ago
• OODST: Silenced DMRby 76561199009917169Adds a custom silenced DMR weapon to the Halo 3: ODST campaign Bonus: The classic mangum and battle rifle are added too2.1k downloadsupdated 4 mo ago
• TTsavo Highway - ODST Nighttimeby 76561198417014698HEY IMPs, this mod ports the halo 3 campaign to the ODST engine and sets it to nighttime. some extra changes too. For this level you play as the Johnson, he was ascended to chief. That or u could say everyone has dementia and think u the chief. If you cannot hear any of the dialogs please exit to...2.1k downloadsupdated 17 mo ago
• CCrows Nest - ODST Nighttimeby 76561198417014698HEY IMPs, this mod ports the halo 3 campaign to the ODST engine and sets it to nighttime. some extra changes too. For this level you play as the Johnson, he was ascended to chief. That or u could say everyone has dementia and think u the chief. I recommend to play on heroic. FYI, this is my inter...2.0k downloadsupdated 20 mo ago
• VVannity's Halo 3 ODST Campagin Revampby Professor VannityThis is a mod that aims to create a new way to experience the Halo 3 ODST campaign. Some ways that I wanted to expand on the Halo 3 ODST campaign was to add more content than was initially in the game and to emphasize the conflict between the elites and the brutes. This includes adding weapons, v...1.9k downloadsupdated 3 y ago
• OODST: Infernoby King FeraligatrODST: Inferno (Version 2.14.1) By: King Feraligatr Extra Firefight maps link . Nexus mirror . ModDB mirror . What this mod is about: ODST: Inferno is a remake and a rebranding of my old mod ODST: Feet First into Hell using the official mod tools. With these tools, I’ve been able to do things that...1.9k downloadsupdated 26 d ago
• HHalo Shapeshifter Edition IVby The Winter WolfThis mod was made to play cooperatively, some levels can be hard alone! You will take the role of a shapeshifter, each level will change shape and adapt to both an enemy and an ally form but in Halo ODST Before playing this mod you should know ... - Take care of the arms of the Flood Combat Forms...1.9k downloadsupdated 13 mo ago
• OODST: De-rookie-fication | Halo 3 Style Co-opby Cream|||MUST BE RAN IN CO-OP||| ODST CO-OP with less Rookie clones This mod is meant to be played in co-op, you'll notice no changes in singleplayer This is a mod that brings Halo 3 style co-op to ODST's campaign, what this actually means is that instead of other players only playing as the Rookie in...1.8k downloadsupdated 7 mo ago
• HHalo ODST Campaign-FireFight Third Personby 76561199179883755Halo ODST Campaign-FireFight Third Person UNSC weapon damage has been slightly improved1.7k downloadsupdated 2 mo ago
• HHalo 3: ODST Main Menu no musicby 76561198330463364Original Halo 3: ODST Main Menu in high quality without music, only background sound effects. How to use: Open MCC settings -> Video -> Configure Backgrounds -> Main Menu Background (or any background) and select Halo 3: ODST Menu no music from the bottom of the list and save. With the new MCC up...1.7k downloadsupdated 3 y ago

88 halo3odst 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.