Comparison

Overkill Zone 3D vs Code Z Day

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Overkill Zone 3D

Engage in a thrilling zombie apocalypse as a hero tasked with eliminating hordes of savage undead. Utilize a vast arsenal of upgradable weapons and strategic precision to survive intense battles and save humanity from extinction.

Highlights
  • Vast arsenal of upgradable weapons
  • Strategic zombie combat
  • Intense FPS action
  • Zombie apocalypse survival
  • Multiple weapon types
  • Destroy enemy bases
Read full description

In recent years, a large number of human vanished from outside their home. Where are they?They become savage zombies! They are killing human! Now, we need a dauntless hero to save us! We will do whatever is necessary to stop them. Multiple weapons are available to shoot zombies. Handgun, sub-machine-guns , machine-pistols, flare, and so on. Please remember that they are not alive human and they will look at you with intense hatred. Raze the base, don’t challenge them to a duel. They had become insensitive to pain. I am sure you will be a dauntless zombie terminator! You will need strategy and precision to stop the assault in this shooting zombie game. Keep your finger on the trigger, survive and shoot to every savage beast! Choose your favorite one and upgrade them! The higher of the level, the shorter time of reloading .Fight a swarm of dead army in one of the funniest free survival games. Fight for tomorrow, shoot zombies hordes, destroy their base, eliminate zombie boss in special missions. Challenge yourself inside a zombie apocalypse world in this FPS strategy battle! Train your gun shooter skills as a survivor in front line fighting for your survival. Enhance your arsenal of ammunition and weapons and face monster zombies shooting as an elite sniper hunter with the best guns and rifles in this zombie RPG FPS action combat game! This lethal war has only one target, stop the zombie apocalypse. Raze enemy. Save the frontier! Bullet can pass through walls, you can kill zombies without seeing them. Kill your enemies with an MP5, AK47, Desert Eagle, FN SCAR, HK 416, crossbow or a powerful grenade or bomb and many more shotguns and rifles! Upgrade ammo and attack weapons of your sniper arsenal to increase your survival battle chances in the battlefield in this action shooter fighting RPG. Keep your finger on the trigger of your gun, aim and shot to ensure your survival in this shooting zombie games. The monster must be eliminated in combat! Otherwise they will find fresh meat constantly. Zombie is savage. It is impolitic for you to chase them. Shoot them immediately. Using lethality weapons will increase the success probability when you raze the zombie base. Upgraded your weapons timely. Get more bullets to decrease the time of reloading. The ultimate target is to shoot king of zombie. The game have different levels. Don't dream of reaching success by one step. But I am sure that you will enjoy this addictive game. Remember, they are not your friends. It is not a alive person. In the survival game, pick up your weapons, killing the zombies, breakout from the enemy lines, save all the humanity. you will be impressed by graphics, figures gameplay and soundtrack. The battlefield flowed with rivers of blood. Don’t be afraid, you are fighting for the tomorrow of all mankind ! As a dauntless hero, never give up !

About

Code Z Day

Experience a chilling first-person shooter survival horror game set on a desolate space station. Battle terrifying mutants, explore dark corridors, and manage your resources to stay alive. The game offers realistic 3D graphics and offline play.

Highlights
  • Offline survival shooter gameplay
  • Realistic 3D horror graphics
  • Character ability upgrades
  • Save and load game progress
  • Detailed 3D map with secrets
Read full description

Are you a fan of tickling your nerves? Are you attracted by gloomy abandoned premises? Is it a pleasure to wander in the dark and not know where a monster will jump at you from? Do you feel like a fish in water in an atmosphere of horror? Do you like it when the veins shake with fear? Aren't you afraid of blood in shooters? Does disturbing music caress your ear? Sure your nerves are like ropes? Then you urgently need the novelty of 2021 - the cool horror shooter Code Z Day! The game works without internet! The plot is right! Endless icy space, in the darkness of which a lonely space station glows faintly. It looks abandoned. Doesn't send distress signals. The station name Edelheim pulsates with a green emergency light. Twilight reigns inside, the team seems to have evaporated. Suddenly, somewhere in the depths of the station, shots are heard, terrible inhuman screams are heard, and after a moment everything calms down again. Cautious creeping footsteps are heard. A man with a weapon appears from around the corner. And this person is you! You are the only survivor in this cursed, forgotten place. A long time ago, you lost count for a long time, the station was taken over by monsters. They killed the entire team and damaged the communication system with the outside world, so there is nowhere to wait for help. Your whole life is a struggle to survive. Survive at any cost and kill as many damn mutants as possible. Code Z Day is a classic first-person shooter set in a chilling horror setting. An easy shooter in which your task is to hit the creatures without a miss. A convenient sight helps you in this, if it glows red - pull the trigger without hesitation, you will 100% shoot the fiend of hell. Merciless action-mixing keeps you in suspense all the time, mutants climb on you from all cracks, only have time to exterminate them. The more monsters you send to the next world, the more ammunition you need - use the adventure game option, explore the territory, collect ammo, look for secret places with useful game bonuses. Separately, it is worth mentioning the excellent 3D graphics of the game, with clear vivid renderings. The free first-person camera option will take you into gloomy corridors, where a bloodthirsty mutant can jump out at you from around every corner. A comfortable motor option with a quick turn, running skill and the ability to move backward with your back more than once will help you save your life. Code Z Day is a top shooting game, which is understandable, with such and such functionality: - Simple and straightforward menu, no unnecessary bells and whistles, just everything you need; - Realistic 3D graphics - it's scary, as if you yourself wander in the darkened compartments; - Option of super-abilities of the character, in addition to the standard pumping of health, defense and weapons; - The function of saving the game and loading from the levels already passed; Detailed 3D map with a visual menu of found game bonuses and secrets; - Ability to choose the difficulty level - from the easiest to hardcore; - Convenient sight - shoot without hesitation when the front sight is red; - Talented musical and sound accompaniment, from which the blood runs cold; - Works offline - play offline!; - Genre combo - shooter, action, walker, horror; - Many levels - you never get bored! A sea of ​​blood and sticky horror is already waiting for you. Code Z Day is the most powerful mens shooting game for true connoisseurs of horror. You are guaranteed a great first-person adventure in the company of creepy monsters!

Screenshots

Overkill Zone 3D4 screens
Code Z Day4 screens

Verdict

The call

The clearest difference is in-app purchases: Overkill Zone 3D at none against Code Z Day's 8. Overkill Zone 3D also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 92%). Code Z Day's advantage is ratings volume (121 vs 1) and update cadence (every 4 months vs every 13 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Code Z Day sells 8 one-off in-app purchases. Overkill Zone 3D asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Overkill Zone 3D holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Code Z Day has 121 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Overkill Zone 3D's written reviews are positive against 92% of Code Z Day's.

UpkeepUpdate frequency

Overkill Zone 3D ships an update every 13 months, Code Z Day every 4 months. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

Scorecard7 real differences · 3 level
Overkill Zone 3D versus Code Z Day: the parameters behind the verdict, then further details
ParameterOverkill Zone 3DCode Z Day
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (121 ratings)
Positive reviews100.0% of reviews — better91.7% of reviews
Number of ratings1121 — better
Update frequencyEvery 13 monthsEvery 4 months — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size90 MB240 MB
Age rating12+12+
Developer喜拉 任Andrey Baranov

Customer experience

Overkill Zone 3D

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Code Z Day

All ratings121 ratings
Positive93.4%
Neutral4.1%
Negative2.5%
Written reviews48 reviews
Positive91.7%
Neutral0.0%
Negative8.3%

In-app purchases

None

Overkill Zone 3D

No in-app purchases

8 purchases

Code Z Day

One-time8
  • Recovery$0.99
  • Ammo$0.99
  • 2000 Credits$1.99
Show 5 more
  • Disable Ads$3.99
  • Triple Revive$4.99
  • Ednless Ammo$4.99
  • Weapons Pack$6.99
  • Dis. Ads/Weapon Pack/Infinite Ammo$9.99

Questions

Is Overkill Zone 3D free?
Overkill Zone 3D is free to download, with no in-app purchases.
Is Code Z Day free?
Code Z Day is free to download, with in-app purchases available.
Which has better reviews, Overkill Zone 3D or Code Z Day?
Overkill Zone 3D is rated higher. Overkill Zone 3D averages 5.0 out of 5 from 1 ratings, while Code Z Day averages 4.7 from 121 ratings.
Do Overkill Zone 3D or Code Z Day have ads?
Both Overkill Zone 3D and Code Z Day show ads.
Which is updated more often, Overkill Zone 3D or Code Z Day?
Overkill Zone 3D ships an update every 13 months, and Code Z Day every 4 months. Most recently, Overkill Zone 3D was updated on September 17, 2026 and Code Z Day on September 9, 2026.

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