Comparison

Slime Evolution vs Birds Evolution Merge

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

Head to head
About

Slime Evolution

Cultivate a charming slime farm by merging identical slimes to discover new ones. Assign elemental properties like water, fire, or grass to influence their characteristics. Embark on adventures to collect more slimes and treasures, and document your discoveries in a field guide.

Highlights
  • Create new slimes by merging
  • Assign elemental properties (water, fire, grass)
  • Go on adventures for rewards
  • Collect slimes in a field guide
  • Discover unique slime evolution methods
Features
Read full description

Raise cute little slime and take care of a slime farm of your own! [‘How to enjoy 'Slime Evolution'!] 1. Create a new slime – combine the same slime and a new slime appears. 2. Set an element of the slime – slime can have water / fire / or grass elements. Each element has different characteristics, so choose wisely! 3. go on an advanture with your Slime. – You can get a slime and jewery during the advanture. 4. Check your field guide book – You can cehck the name of slimes with funny explanation and their ability. 5. Make a special Slime – Try to make a special slime by finding a new way other than existing evolution method. Thank you :)

About

Birds Evolution Merge

Combine various bird species to evolve them into new, bizarre forms. Explore different stages, unlock curious creatures, and discover unexpected endings in this evolutionary merge game. Earn coins through bird poop to buy more creatures and accelerate your progress.

Highlights
  • Combine similar birds to create new creatures
  • Evolve birds to discover exotic forms
  • Use bird poop coins to buy new creatures
  • Discover different stages and bird species
  • Unlock various possible endings
  • Incremental clicker gameplay
Features
Read full description

A little bird told me that you should definitely play this. Well, not actually. But it’s fun, trust us. Combine different and awesome kinds of birds and go beyond your imagination mixing up these animals. The sky is the limit! From the creators of the renowned Evolution games, comes the sequel that takes the series to incredible new heights! Combine birds to evolve them and discover their most curious, exotic and bizarre forms! FEATURING • Pantheon: a place for supreme beings to look down on us mortals and laugh at our misery • Impostors: watch out for impostors trying to steal the spotlight from the birds HOW TO PLAY • Drag and drop similar birds to create new mysterious creatures • Use bird poop coins to buy new creatures and make even more money • Alternatively, fiercely tap a bird to make coins pop when birds poop HIGHLIGHTS • Different stages and many bird species to discover • A mind-blowing story yet untold • The unexpected mix of alpaca-like evolution, 2048 and incremental clicker games • Doodle-like illustrations • Various possible endings: find your destiny • No birds were harmed in the making of this game, only developers Don’t settle for lousy games. Download Birds Evolution and reach for the sky! You know the saying: “the early bird catches the worm”! Disclaimer: While this App is completely free to play, some additional content can be purchased for real money in-game. If you do not want to use this feature, please turn off in-app purchases in your device's settings. Like our page on Facebook and be the first to know about our upcoming games and updates! http://fb.com/tappshq

Screenshots

Slime Evolution4 screens
Birds Evolution Merge4 screens

Verdict

The call

The clearest difference is iOS requirement: Slime Evolution at 13.0 against Birds Evolution Merge's 15.0. On price, rating, review sentiment and ratings volume 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. Slime Evolution sells 4 one-off in-app purchases and Birds Evolution Merge sells 14 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Slime Evolution against 4.7 for Birds Evolution Merge. Both are backed by a comparable volume of ratings — 597 and 852 respectively. Written reviews are what separate them: 91% of Slime Evolution's written reviews are positive against 87% of Birds Evolution Merge's.

UpkeepUpdate frequency

Slime Evolution ships an update every 2 months, Birds Evolution Merge every 5 weeks. Both last shipped on October 22, 2026.

Scorecard1 real difference · 9 level
Slime Evolution versus Birds Evolution Merge: the parameters behind the verdict, then further details
ParameterSlime EvolutionBirds Evolution Merge
PriceFreeFree
Rating4.8 (597 ratings) — better4.7 (852 ratings)
Positive reviews91.2% of reviews — better87.4% of reviews
Number of ratings597852 — better
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size111 MB156 MB
Age rating4+9+
DeveloperSeHyeon ImTPG TECNOLOGIA DA INFORMACAO LTDA

Customer experience

Slime Evolution

All ratings597 ratings
Positive95.5%
Neutral3.2%
Negative1.3%
Written reviews260 reviews
Positive91.2%
Neutral5.0%
Negative3.8%

Birds Evolution Merge

All ratings851 ratings
Positive92.5%
Neutral4.9%
Negative2.6%
Written reviews174 reviews
Positive87.4%
Neutral5.2%
Negative7.5%

User reviews

Slime Evolution

From 597 App Store ratings

What we love

  • 👍 Cute and relaxing game
  • 🎨 Charming art style
  • 🕹️ Simple and addictive gameplay
  • ⏱️ Good time-killer
  • 🌳 Enjoyable exploration and evolution

Room to improve

  • 🐛 Occasional bugs and glitches
  • 💰 Unbalanced upgrade costs between platforms
  • 🔍 Unclear mechanics (e.g. using seeds)
  • 🌐 Language/localization issues

Birds Evolution Merge

From 852 App Store ratings

What we love

  • 💎 Addictive and fun gameplay
  • 🎨 Ability to customize birds
  • 🐦 Variety of bird species
  • 🎶 Enjoyable music

Room to improve

  • 🔍 Repetitive gameplay
  • 🛑 Excessive ads
  • 🐛 Bugs and crashes
  • 🔊 Music interruption issues

Bugs and requests

Slime Evolution

Reported bugs

3 issues
  • Inability to merge certain slime types
  • Disappearing slimes and lost progress
  • Ads not working or causing errors

Requested features

5 requests
  • Add more types of slimes
  • Implement a slime shop/store
  • Improve the reward system
  • Add more gameplay modes or mini-games
  • Enhance the exploration and progression systems

Birds Evolution Merge

Reported bugs

3 issues
  • Inability to change bird colors
  • Incorrect pricing in the store
  • Game crashing after updates

Requested features

3 requests
  • More bird species and evolution stages
  • Ability to listen to music while playing
  • Improved performance and stability

In-app purchases

4 purchases

Slime Evolution

One-time4
  • 20 Gem$0.99
  • 110 Gem$4.99
  • 240 Gem$9.99
Show 1 more
  • 1400 Gem$49.99
14 purchases

Birds Evolution Merge

One-time14
  • Remove Ads$1.99
  • Hard Currency Pack 1$1.99
  • pack with diamonds$1.99
Show 11 more
  • pack of rubies$1.99
  • instant coins doubler$1.99
  • Promo Bundles VeryHigh$2.99
  • Shop Bundle 1$2.99
  • Hard Currency Pack 2$4.99
  • big pack of rubies$5.99
  • income doubler$5.99
  • Shop Bundle 2$5.99
  • Trinket$6.99
  • Hard Currency Pack 3$9.99
  • starter bundle discount$9.99

Questions

Is Slime Evolution free?
Slime Evolution is free to download, with in-app purchases available.
Is Birds Evolution Merge free?
Birds Evolution Merge is free to download, with in-app purchases available.
Which has better reviews, Slime Evolution or Birds Evolution Merge?
Slime Evolution is rated higher. Slime Evolution averages 4.8 out of 5 from 597 ratings, while Birds Evolution Merge averages 4.7 from 852 ratings.
Do Slime Evolution or Birds Evolution Merge have ads?
Both Slime Evolution and Birds Evolution Merge show ads.
Which is updated more often, Slime Evolution or Birds Evolution Merge?
Slime Evolution ships an update every 2 months, and Birds Evolution Merge every 5 weeks. Most recently, Slime Evolution was updated on October 22, 2026 and Birds Evolution Merge on October 22, 2026.

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