Slime Evolution vs Robot Merge
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
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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 :)
Robot Merge
Merge identical robots to discover and collect 60 unique machines. Upgrade your buildings, earn coins, and expand your robot empire in this addictive collection game.
- Merge identical robots
- Discover 60 unique machines
- Upgrade buildings
- Earn coins
- Expand your world
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Build Your Robot Empire! Drag identical robots together to discover 60 unique machines and upgrade your buildings in this highly addictive game! Earns coins and expand your world!
Screenshots
Verdict
The clearest difference is ads: Robot Merge at none against Slime Evolution's shown. Robot Merge also leads on update cadence (every 4 days vs every 2 months) and ratings volume (3.1K vs 597). Slime Evolution's advantage is review sentiment (91% vs 80%). On price, rating, in-app purchases and monetization model 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
Both are free to download. Slime Evolution sells 4 one-off in-app purchases and Robot Merge sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Slime Evolution against 4.8 for Robot Merge. That said, the two scores are not equally well evidenced: Robot Merge has 3.1K ratings behind it against 597, so its average is the more settled of the two. Written reviews are what separate them: 91% of Slime Evolution's written reviews are positive against 80% of Robot Merge's.
Slime Evolution ships an update every 2 months, Robot Merge every 4 days. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.
| Parameter | Slime Evolution | Robot Merge |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (597 ratings) | 4.8 (3.1K ratings) — better |
| Positive reviews | 91.2% of reviews — better | 80.4% of reviews |
| Number of ratings | 597 | 3.1K — better |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 111 MB | 196 MB |
| Age rating | 4+ | 4+ |
| Developer | SeHyeon Im | Umbrella Games LLC |
Customer experience
Slime Evolution
Robot Merge
User reviews
Slime Evolution
From 597 App Store ratingsWhat 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
Robot Merge
From 3.1K App Store ratingsWhat we love
- 🤖 Excellent game
- 🤖 AWESOMEEE!!!!!
- 👍 Good, good, thanks for making this
- 🌟 Very calming
- 🤖 I like upgrading robots!
Room to improve
- 🔒 Privacy concerns
- 🐛 Double charged for an in-app purchase
- 💰 Childrens game with NSFW ads
- 🐛 Needs an update badly!
- 🔍 Ads on a decent game
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
Robot Merge
Reported bugs
5 issues- Lucky merges have stopped working
- Glitch where it chips gems when upgrading robots
- App freezing issues
- Incompatible with older devices
- Login screen freezes
Requested features
5 requests- More robots and other stages or worlds
- Leaderboard
- Auto assign robots to mines/buildings
- Dark mode option
- Advanced analytics dashboard
In-app purchases
Slime Evolution
- 20 Gem$0.99
- 110 Gem$4.99
- 240 Gem$9.99
Show 1 moreShow fewer
- 1400 Gem$49.99
Robot Merge
- Budget Pack$1.99
- Crate Of Gems$4.99
- Shipment Of Gems$9.99
Show 1 moreShow fewer
- Mountain Of Gems$29.99
Questions
Is Slime Evolution free?
Is Robot Merge free?
Which has better reviews, Slime Evolution or Robot Merge?
Do Slime Evolution or Robot Merge have ads?
Which is updated more often, Slime Evolution or Robot Merge?
Other comparisons
