Return of Zombie Ops is a zombie modification for Call of Duty 4, it features content from Black Ops Zombie mode as well as from Modern Warfare 3 Survival mode and Ghosts Extinction mode. It's set slightly in the future with a lot of new weapons.
For more infos about the mods different versions visit:

Main features off the mod

  • Different Zombie (PvP and PvE) Gamemodes
  • A big arsenal of new weapons
  • Character customization
  • New rank system with 10 Prestige ranks
  • Challenges for extra money, XP and items
  • Skill trees for a more personal character

Versions and Releases

There are two versions off RoZO planned, first we got the normal version. It will include all off the features that we put into RoZO. Second we got the light version, this version won't include new weapons, and perhaps also some other things. The light version is mainly meant for people with slow Internet and to keep up compatibility with the default CoD4 1.7It is planned to release the light version a few days after the normal version since we will need a few days to update it.

Setting & Background

In RoZo a military special force tries to get control over the zombies outbreak that started by accident in a testing laboratory. You take over the role of one of the field soldiers, you have to face the zombies armed with anything that's available. The HQ will send you objectives and support during the mission.


As the light version will have all weapons form CoD4 MP they are not listed.

Melee weapons

  • M9 Bayonet


  • M9
  • MP443
  • QSZ-92
  • Desert Eagle

Sub Machine Guns

  • MP7
  • SR-2
  • Uzi
  • P90


  • Remington 870
  • DAO-12
  • Double-Barrel


  • AK5c
  • AKS-74u
  • ACE 21 CQB1

Assault Rifle

  • AM16A4
  • AEK-971
  • M416

Battle and Marksman Rifle

  • SA-85
  • SKS
  • Kel Tec RFB

Sniper Rifle

  • M40A5
  • SV-98
  • FY-Js

Light Machine Guns

  • M249
  • PKP Pecheneg
  • Type 88 LMG

Special and Heavy

  • XM25
  • RPG-7V2

Gadgets and Grenades

  • C4 Explosive
  • M18 Claymore
  • M67 Frag
  • M34 Incendiary
  • M84 Flash
  • M18 Smoke
  • Flare


You'll get to choose three supportstreaks to take with you into battle. Using a supportstreak will cost you a set amount off points, depending on how powerful the streak is. For additional streaks you can also buy airdrops from the armories or pick up powerups, depending on the gamemode. Below you find a list off likely supportstreaks.

  • Airdrops - can only be bought from the Support Armory
  • Sentry Turrets
  • RC Vehicles
  • Helicopter Support
  • AC-130 Support
  • Missile Support
  • Airstrikes
  • Juggernaut suits and similar gear


There will be a lot of different skills you can utilize. They will be split into different skill trees, while the first one is free after ranking up to rank 2 you will have to pay for another skill tree. Also you can take only one skill tree into battle.

Character Customization

You will be able to customize your character in several different ways. For example you'll be able to choose your gender, uniform and headgear.


# 3aGl3 - Head developer, Scripting, 3D Modeling, FX, Sounds
xFire: ki11ing3agl3
Twitter: @_3aGl3_
YouTube: 3vIl3aGl3

# Lefti - Scripting, 2D & Texture, Community Leader
xFire: left4dgoe

# ParadoX - Weapons
xFire: psilocybinsq

# ElTitoPricus - Characters
xFire: titopricus

# MrMelusin - Weapons

# Mitsurugi - Weapons

Special Thanks

# Sanya - Help with Player models
# Susel - Help with Effects
# NNJ - Help with the CodX core
# IZaRTaX - Helping out with mapping and cooperating for creating RoZO maps
# DidUknowiPwn - New fonts
# MA85 - Providing various assets
# JeffSkye - Making scripts for MP maps to run with 0.6

Abandoned/cut features

If you are following RoZO for a certain amount of time now you have sure seen a lot of features being announced and later disappear again. Of course we'd like to keep as much as possible in the mod but that's just not possible.
One of the options if that a feature/item is not fitting the concept of the mod or interfering with other things.
Another, and probably the one we encounter most of the time, option is that COD4 has certain engine limitations, that we can not work around nor influence in any way at the moment. So we have to create a mod within those engine limitations. To do so we have to abandon certain things to make room for new or just to be within the limits. If a thing you absolutely loved is among the abandoned stuff we're sorry but please keep in mind that there are also other people who want to enjoy the mod, so not everyone can have his favorite stuff.

Image RSS Feed Latest Screens
New HUD take three More progress More progress
Blog RSS Feed Post news Report abuse Latest News: RoZO - 9th March Update

0 comments by 3aGl3 on Mar 9th, 2015

Today I updated our Server again, here is a quick Changelog:
- Tried to fix the font placement in the new menus
- Added more master server queries for a web based server list
- Fixed a bug where players could get stuck on barricades
- Removed the Change Class button
- Made the leave Game buttons show up in the team select menu at all times
- Fixed an issue where you couldn't change team to spectator
- Fixed an issue where the Controls button wouldn't show up in the team select menu

Also make sure to like our Facebook page to get those small updates faster!

Media RSS Feed Latest Video
Downloads RSS Feed Upload file Latest Downloads
RoZo - v0.5.021

RoZo - v0.5.021

Sep 17, 2013 Full Version 27 comments

Final release of RoZo v0.5, no more big updates on this.

RoZo - v0.5.018

RoZo - v0.5.018

Jun 9, 2013 Full Version 34 comments

This version is outdated and we don't give support for it anymore!

Return of Zombie Ops 0.5 Beta Release

Return of Zombie Ops 0.5 Beta Release

Mar 17, 2013 Full Version 35 comments

This version is outdated and we don't give support for it anymore!

Post comment Comments  (680 - 690 of 1,193)
TheReaper1 Jul 18 2013, 1:58pm says:

I have noticed from the beginning that the models of weapons (gun) armory and Upgrades (grenade model) armory that those two had things from mw3 survival, so can you make the third armory? i mean the air support armory, and make the perks and care packages moved to it, as well as the ability to buy killstreaks, seems good?

+2 votes     reply to comment
3aGl3 Creator
3aGl3 Jul 19 2013, 5:30pm replied:

Stuff will be different in v0.6...maybe all things will be available, I'm currently thinking about that possibility. Also the reason for the delay for the how 2 videos.

+2 votes   reply to comment
TheReaper1 Jul 18 2013, 1:04pm says:

As a true fan of Rozo, i will always be at help to make it betterm by reporting and recording glitches, i recorded 12 demos of glitches, some of them might be stupid, but surely useful, some of them are funny :D

+2 votes     reply to comment
TheReaper1 Jul 17 2013, 5:04pm says:

One last thing to say, YOU GUYS ARE AWESOME! You made that silly old game be fantastic, i uninstalled this game years ago, but i installed it again for this mod, its the best ever ^^!

+2 votes     reply to comment
3aGl3 Creator
3aGl3 Jul 18 2013, 5:25am replied:

Thanks :)

+1 vote   reply to comment
TheReaper1 Jul 15 2013, 1:42pm says:

Oh i just remembered that about a week ago, i saw a player on PF server having a weird weapon, it was in the shape of two letters FX and it was red, days after that, i purchased all LMG weapons, so that i unlocked that special LMG weapon Stoner, to be honest, it had little magazine compared to other LMG weapons, and my friend wanted to see my weapon, when we were playing, he saw me and said:- wtf, i see FX red in your hands xD, and that's how i got it, that weapon is stupid and not cool, but i have some idea that would be better, why not replace it with Death Machine? making it in the LMG menu, and to make it fair, you may make it require about 20000 money to unlock, that would be awesome!

0 votes     reply to comment
3aGl3 Creator
3aGl3 Jul 18 2013, 5:14am replied:

As you possibly already know v0.6 will make a lot of changes in the weapons. For v0.5 it's not an option anymore to change the weapons, and for v0.6 it has to be a damn good suggestion to be adopted in the mod. However the Stoner won't be back and the LMGs will all have a magazine of 100 or bigger.
Though thanks for the report about the fx, we'll have a look at it.

+1 vote   reply to comment
Guest Jul 9 2013, 4:23am says:

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☢Scorpy☢ Jul 9 2013, 7:54am replied:

You have to unlock all assault rifles

+2 votes     reply to comment
footballhatrick Jul 6 2013, 12:29am says:

I noticed a few things - firstly the ballistic knife has no crosshair, also the minigun, raygun, wanderwaffule (or watever its called). This makes it kind of hard to get kills with. Also when you get that killstreak with the minigun on the helecopter - it is pretty useless because its very hard to get kills with as firstly it has no crosshair, and secondly its not as powerful as in black ops and MW3 - so getting kills is pretty hard, and i dont think its worth getting this killstreak so late on in the game - cause normally i get more kills with my RCXD :P Also it would be nice if you could actually fix maps - like build it properly to stop zombies glitching in walls and the minimap to show the whole map properly, also if u can make the zombies run smoothly - i notice they dont actually follow the player but they follow a path to the player, it would also be nice if u can add a boss zombie which is like a giant and has alot alot of health, and very hard to kill - and as its appearance make it have loads of armour - to make it look better. Hope to see the random gun place, place to buy perks(drinking bottles from black ops) and doors - where u pay white money to open, a teleporter, switches across the map to active e.g electricity/fire to kill zombies. 1 last thing - i noticed zombies had same health through out all waves - it would be better if it increased by a small amount each wave (like black ops and rotu) also if u can have more than 13 waves (preferably infinite or up 20 waves) - as this is pretty easy - i could probably finish it by myself. Looking forward to new update :) Keep up the good work, and if help is needed - im sure i can help :)

+1 vote     reply to comment
Lefti Creator
Lefti Jul 6 2013, 6:24am replied:

We couldnt fix maps. That must the mappers do, we havent write the maps. We cant stop zombies to glitch in walls. And our mod is no wish mod. And to a boss zombie, its come in version 0.6. If you want play as a giant zombie then play rotu 2.1, we made a RoZo mod not a RotU Mod you understand this. Every serveradmin can change the waves from 1 to infinite.

where do you want to help, can you modding?

+1 vote   reply to comment
footballhatrick Jul 6 2013, 8:24am replied:

never tried it, but im sure i could help with testing, and any other modding (with abit of help)

+1 vote     reply to comment
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