Comparison

Evolution vs Poly Bridge 2

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

Head to head
About

Evolution

Design and build unique creatures using joints, bones, and muscles. Witness their learning and improvement through evolutionary algorithms and neural networks as they tackle tasks like running, jumping, and flying. Share your creations with friends.

Highlights
  • Creature design with joints, bones, muscles
  • Neural network learning
  • Evolutionary algorithm improvement
  • Tasks: running, jumping, climbing, flying
  • Share simulation saves and creature designs
  • View source code
Features
Read full description

Use joints, bones and muscles to build creatures that are only limited by your imagination. Watch how the combination of neural networks and an evolutionary algorithm can enable your creatures to learn and improve at their given tasks all on their own. The tasks include running, jumping, climbing and flying. Can you design the ultimate creature that is good at all of the tasks? The latest update allows you to easily share your simulation saves and creature designs with your friends. Note that this is more of a simulation than a game. There are no real objectives. But there is a lot to learn if you are interested in the basics of machine learning and neural networks. You can even look at the source code if you want. There is also a Mac & PC version available for download and a browser version for you to try out on the main project website (keiwando.com/evolution).

About

Poly Bridge 2

Experience a creative engineering challenge by designing and building bridges in this acclaimed simulator. Featuring new levels, mechanics, and a custom physics engine for predictable simulations. Enjoy a new soundtrack with remastered original songs.

Highlights
  • Bridge construction levels
  • Custom physics engine
  • New spring material
  • Original and remastered soundtrack
  • Creative engineering puzzles
Features
Read full description

The acclaimed bridge-building simulator is back and better than ever! New levels, new mechanics, a custom physics engine, and much more! Rediscover your engineering creativity with even more hours of puzzling fun! Adrian Talens returns with a new full-length Soundtrack! Relax to the soothing and critically acclaimed music with 13 completely new tracks plus 18 of the original Poly Bridge songs remastered! Enjoy over an hour and a half of the familiar and gentle acoustic guitar rhythms. Take on levels with some added cushion and bounce your way to victory with the new Spring material. Now your bridges can be even more flexible! We went above and beyond this time, crafting a custom physics engine optimized and fine-tuned specifically for bridge simulations. Accurate and predictable, it guarantees the same simulation outcome for everyone, keeping the competitive aspect of the game alive!

Screenshots

Evolution4 screens
Poly Bridge 24 screens

Verdict

The call

The clearest difference is monetization model: Evolution at free against Poly Bridge 2's paid. Evolution also leads on review sentiment (84% vs 75%). Poly Bridge 2's advantage is chart position (#123 vs unranked) and update cadence (monthly vs every 2 months). On price, rating, ratings volume and ads 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

Evolution costs $1.99 and Poly Bridge 2 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Poly Bridge 2 holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 549 and 276 respectively. Written reviews complicate that: 84% of Evolution's written reviews are positive against 75% of Poly Bridge 2's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Evolution ships an update every 2 months, Poly Bridge 2 monthly. Both last shipped on October 1, 2026.

Scorecard4 real differences · 7 level
Evolution versus Poly Bridge 2: the parameters behind the verdict, then further details
ParameterEvolutionPoly Bridge 2
Price$1.99$1.99
Rating4.4 (549 ratings)4.6 (276 ratings) — better
Positive reviews84.0% of reviews — better75.3% of reviews
Number of ratings549 — better276
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#123 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size67 MB271 MB
Age rating4+4+
DeveloperKeiwan DonyagardDry Cactus

Customer experience

Evolution

All ratings549 ratings
Positive85.8%
Neutral4.4%
Negative9.8%
Written reviews194 reviews
Positive84.0%
Neutral4.6%
Negative11.3%

Poly Bridge 2

All ratings276 ratings
Positive89.1%
Neutral1.8%
Negative9.1%
Written reviews170 reviews
Positive75.3%
Neutral7.6%
Negative17.1%

User reviews

Evolution

From 549 App Store ratings

What we love

  • 👍 Great game
  • 🚀 Addictive and fun
  • 💡 Interesting concept of AI-driven evolution
  • 👍 Unique and creative
  • 👍 Enjoyable to watch creatures evolve

Room to improve

  • 🐛 Crashes and freezes
  • 🐛 Glitches and bugs
  • 🐛 Creatures behave erratically
  • 🐛 Difficulty creating functional creatures

Poly Bridge 2

From 276 App Store ratings

What we love

  • 🚀 Engaging and creative
  • 👍 Fun and challenging
  • 💎 Great value for money
  • 🧠 Encourages critical thinking
  • 🎨 Allows for creative bridge design

Room to improve

  • 🐛 Frequent crashes and freezing issues
  • 🤯 Extremely difficult later levels
  • 🔧 Sandbox mode bugs and limitations
  • 🕹️ Inconvenient controls on mobile
  • 🔍 Lack of in-game guidance/tutorials

Bugs and requests

Evolution

Reported bugs

4 issues
  • Creatures re-appear after being deleted
  • Horizontal distance not recorded properly
  • Simulation screen turns white
  • Creatures get stuck in a looping state

Requested features

8 requests
  • Add swimming and flying modes
  • Ability to customize creature body parts
  • Option to speed up or pause evolution
  • Save and load creature designs
  • More task types (e.g. grabbing, throwing)
Show 3 more
  • Multiplayer or competition modes
  • Improved camera controls
  • Ability to create obstacles or terrain

Poly Bridge 2

Reported bugs

5 issues
  • Progress reset or not saved properly
  • Sandbox mode issues (invisible objects, inability to use split joints)
  • Graphical glitches (screen flashing when placing springs)
  • Crashes on level completion or when loading the game
  • Compatibility issues on older/certain iPad models

Requested features

5 requests
  • Add leaderboards and community features
  • Improve sandbox mode functionality
  • Provide more in-depth tutorials
  • Add support for controllers
  • Expand vehicle and material options

In-app purchases

None

Evolution

No in-app purchases

None

Poly Bridge 2

No in-app purchases

Questions

Is Evolution free?
Evolution costs $1.99, with no in-app purchases.
Is Poly Bridge 2 free?
Poly Bridge 2 costs $1.99, with no in-app purchases.
Which has better reviews, Evolution or Poly Bridge 2?
Poly Bridge 2 is rated higher. Evolution averages 4.4 out of 5 from 549 ratings, while Poly Bridge 2 averages 4.6 from 276 ratings.
Do Evolution or Poly Bridge 2 have ads?
Neither Evolution nor Poly Bridge 2 shows ads.
Which is updated more often, Evolution or Poly Bridge 2?
Evolution ships an update every 2 months, and Poly Bridge 2 monthly. Most recently, Evolution was updated on October 1, 2026 and Poly Bridge 2 on October 1, 2026.

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