Comparison

Zombie Outbreak Simulator vs Topia World Builder

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

Head to head
About

Zombie Outbreak Simulator

Simulate and customize zombie outbreaks in real-world locations using Google Maps. Control outbreak parameters, observe chaos unfold, and even join the fight with military interventions. Explore thousands of player-created maps or offline options.

Highlights
  • Real-world map simulation with Google Maps integration
  • Customizable outbreak parameters (zombie speed, civilian numbers, etc.)
  • Observe infection spread from satellite to street view
  • Direct intervention with bombs, soldiers, and helicopters
  • Thousands of player-created maps
  • Offline map play
Features
Read full description

Zombie Outbreak Simulator is a sandbox app where you can customize your own zombie outbreak. Choose from thousands of real locations around the world on Google Maps! ◆ Over 3 million downloads! ◆ • "a killer timewaster" - Gizmodo • "zombies plus Google Maps equals fun" - Games Radar • "a splendid idea, no matter how omnipresent zombies may be" - Rock, Paper, Shotgun • Apple Staff Favorite in the US, Canada, Brazil, Mexico, Spain and 14 other countries! • Top 5 in Simulation and Strategy on the iPad! Watch a zombie outbreak unfold in real world environments, and alter the outbreak parameters to your liking. Do you prefer old-school slow movers, or the new fast movers? Is the population armed? How well can they shoot? How many police will be on patrol? Customize your own outbreak then watch the chaos unfold. Zoom in and out to keep track of the infection as it spreads across the map! Watch from a high satellite view to get an overview of the infection, or zoom right in and watch as civilians run for their lives, shoot at zombies and inevitably become infected. Keep track of the people's only hope - local law enforcement, as they fight back against overwhelming odds. Join in the action by raining fire from above with Mk81 and Mk82 bombs, delivered by A-10 Tank Killers! Parachute soldiers into the front lines to protect the civilians. Deploy helicopters to rescue civilians before they become overwhelmed. From the Settings screen you can change the following parameters: • Civilian numbers • Civilian armed % • Civilian accuracy • Initial zombie numbers • Zombie outbreak direction (N, E, S, W, Map Wide) • Zombie speed • Infection time (how long it takes for infected civs to turn into zombies) • Number of police • Police accuracy • Soldier accuracy From the Map Select screen you can choose from: • 15 featured online maps, using Google Maps • 5 offline maps (play anywhere even without an Internet connection) • Over 2,500 player maps using Google Maps, created by players of the game at www.class3outbreak.com This free version of the app contains limited features, with in-app purchases for upgrades to unlock the full functionality. Initially you have access to two maps (one online, one offline), limited outbreak settings, and limited numbers of bombs, soldiers and helicopters.

About

Topia World Builder

Shape a vibrant planet as a divine creator. Sculpt landscapes, grow forests, and populate your world with diverse animal life. Witness ecosystems evolve as you manage your creation.

Highlights
  • Create mountains, valleys, rivers, and oceans
  • Spawn and manage large animal herds
  • Observe animal interactions and ecosystems
  • Save and edit worlds
  • Customize land, water, and sky colors
  • Supports landscape and portrait modes
Features
Currently charting
Read full description

From the Award Winning Studio Crescent Moon Games and Glenn Corpes, one of the creators of the original Populous series of games, comes TOPIA WORLD BUILDER, a unique world building sim, tailored for iOS devices. Topia World Builder is a world creation simulation. You become god and shape the land as you choose, by the use of touch controls. Swipe your finger to create mountains, valleys, rivers, and oceans. Watch trees grow, spawn thousands of animals - and watch them live and die on the planet of your creation! Features: -Create Mountains -Create Valleys -Create Rivers -Create Oceans -Spawn various animal types -Build enormous herds of animals -Watch predators attack other animals -Save your worlds so you can edit them later -Change the color of land, water, sky -Play in both landscape and portrait modes

Screenshots

Zombie Outbreak Simulator4 screens
Topia World Builder3 screens

Verdict

The call

The clearest difference is price: Zombie Outbreak Simulator at Free against Topia World Builder's $1.99. Zombie Outbreak Simulator also leads on rating (4.1 vs 3.6) and review sentiment (69% vs 57%). Topia World Builder's advantage is in-app purchases (none vs 10) and ads (none vs shown). On 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

Zombie Outbreak Simulator is free to download; Topia World Builder costs $1.99 up front. Zombie Outbreak Simulator sells 10 one-off in-app purchases. Topia World Builder asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zombie Outbreak Simulator holds the better App Store score, 4.1 against 3.6. That said, the two scores are not equally well evidenced: Zombie Outbreak Simulator has 1.7K ratings behind it against 236, so its average is the more settled of the two. Written reviews point the same way: 69% of Zombie Outbreak Simulator's written reviews are positive against 57% of Topia World Builder's.

UpkeepUpdate frequency

Zombie Outbreak Simulator ships an update every 3 months, Topia World Builder every 6 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard10 real differences · 1 level
Zombie Outbreak Simulator versus Topia World Builder: the parameters behind the verdict, then further details
ParameterZombie Outbreak SimulatorTopia World Builder
PriceFree — better$1.99
Rating4.1 (1.7K ratings) — better3.6 (236 ratings)
Positive reviews69.3% of reviews — better57.2% of reviews
Number of ratings1.7K — better236
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#71 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.05.1.1 — better
Further details — not scored
Size103 MB57 MB
Age rating12+4+
DeveloperBinary Space Pty LtdCrescent Moon Games LLC

Customer experience

Zombie Outbreak Simulator

All ratings1,699 ratings
Positive78.1%
Neutral6.6%
Negative15.3%
Written reviews368 reviews
Positive69.3%
Neutral10.6%
Negative20.1%

Topia World Builder

All ratings236 ratings
Positive62.3%
Neutral9.7%
Negative28.0%
Written reviews388 reviews
Positive57.2%
Neutral18.8%
Negative24.0%

User reviews

Zombie Outbreak Simulator

From 1.7K App Store ratings

What we love

  • 🚀 Great simulator
  • 🚀 Immersive gameplay
  • 👍 Beautiful graphics
  • 👍 Addictive and fun

Room to improve

  • 💰 Pay-to-play model
  • 🐛 Bugs and glitches
  • 🐛 AI issues
  • 🔒 Limited free content

Topia World Builder

From 236 App Store ratings

What we love

  • 🚀 Smooth and responsive
  • 👍 Beautiful graphics
  • 🌳 Relaxing sandbox experience

Room to improve

  • 🐛 Unbalanced animal populations
  • 🔍 Lack of content and features
  • 💤 Gets boring quickly

Bugs and requests

Zombie Outbreak Simulator

Reported bugs

4 issues
  • Civilians getting stuck in buildings
  • Online and player-created maps not working
  • Issues with watching ads for in-game rewards
  • Restore purchases not working after reinstallation

Requested features

8 requests
  • Add more military units (tanks, helicopters, etc.)
  • Implement a sandbox mode with more customization
  • Improve zombie and civilian AI
  • Add more maps and locations
  • Introduce different zombie types and mutations
Show 3 more
  • Allow players to control individual units
  • Implement a base-building or fortification system
  • Add a wave-based survival mode

Topia World Builder

Reported bugs

3 issues
  • Birds getting stuck over the ocean
  • Land animals drowning in water
  • Inconsistent controls and UI

Requested features

5 requests
  • Add humans and civilization building
  • Introduce natural disasters and weather effects
  • Expand animal and plant diversity
  • Improve ecosystem balance and predator-prey dynamics
  • Implement saving and loading of created worlds

In-app purchases

10 purchases

Zombie Outbreak Simulator

One-time10
  • Unlock Offline & Online Maps$0.99
  • Unlock Outbreak Settings$0.99
  • Unlimited Soldiers$0.99
Show 7 more
  • Unlimited Mk81 Bombs$0.99
  • Unlimited Mk82 Bombs$0.99
  • Unlimited Helicopters$0.99
  • Unlock Player Maps - Americas$1.99
  • Unlimited Bombs, Soldiers & Helicopters$2.99
  • Unlock All Player Maps$2.99
  • Unlock Everything$4.99
None

Topia World Builder

No in-app purchases

Questions

Is Zombie Outbreak Simulator free?
Zombie Outbreak Simulator is free to download, with in-app purchases available.
Is Topia World Builder free?
Topia World Builder costs $1.99, with no in-app purchases.
Which has better reviews, Zombie Outbreak Simulator or Topia World Builder?
Zombie Outbreak Simulator is rated higher. Zombie Outbreak Simulator averages 4.1 out of 5 from 1.7K ratings, while Topia World Builder averages 3.6 from 236 ratings.
Do Zombie Outbreak Simulator or Topia World Builder have ads?
Zombie Outbreak Simulator shows ads; Topia World Builder does not.
Which is updated more often, Zombie Outbreak Simulator or Topia World Builder?
Zombie Outbreak Simulator ships an update every 3 months, and Topia World Builder every 6 weeks. Most recently, Zombie Outbreak Simulator was updated on October 15, 2026 and Topia World Builder on October 14, 2026.

Other comparisons