Brian vs Slime Evolution
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Brian
Care for a sensitive, blob-like creature that can mutate into various forms through DNA injection. Navigate deadly obstacles and manage its well-being to prevent it from exploding into happiness. Purchase new creatures if your current one perishes.
- Physics-based gameplay
- Pet evolution and mutation
- Tamagotchi-style care
- Side-scrolling obstacle navigation
- DNA injection for mutations
- Black humor elements
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100,000+ downloads all over the world! Brian is a physics-based, Tamagotchi, side-scrolling pet game. Brian is a very fragile, sensitive brain-like blob, that requires the utmost care. By injecting DNA to Brian it could mutate to different forms like Angel Brian with spider legs, Chicken Leg Brian with Tentacle arms, tentacle Brian with human ears, anything is possible. As you the mad scientist, creator and father of Brian it's your sole responsibility to take good care of it or it will explode into happiness. What happen if your Brian died? Buy another one! Features: - Cuteness, adorable with a little bit of contrast - Deadly obstacles: slope, river, mines, lasers, missiles - Most likely broken physics - Pet evolutions and mutations - Maybe a little bit of black humour
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 :)
Screenshots
Verdict
The clearest difference is review sentiment: Slime Evolution at 91% against Brian's 44%. Slime Evolution also leads on rating (4.8 vs 3.8) and ratings volume (597 vs 64). Brian's advantage is ads (none vs shown) and iOS requirement (7.0 vs 13.0). On price, update cadence, 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. Brian sells 5 one-off in-app purchases and Slime Evolution sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Slime Evolution holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Slime Evolution has 597 ratings behind it against 64, so its average is the more settled of the two. Written reviews point the same way: 44% of Brian's written reviews are positive against 91% of Slime Evolution's.
Brian ships an update every 3 months, Slime Evolution every 2 months. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.
| Parameter | Brian | Slime Evolution |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (64 ratings) | 4.8 (597 ratings) — better |
| Positive reviews | 44.4% of reviews | 91.2% of reviews — better |
| Number of ratings | 64 | 597 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No — better | Yes |
| 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 | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 79 MB | 111 MB |
| Age rating | 9+ | 4+ |
| Developer | SweatyChair Pty. Ltd. | SeHyeon Im |
Customer experience
Brian
Slime Evolution
Bugs and requests
Brian
Not enough reviews yet to summarise bugs or 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
In-app purchases
Brian
- Bag of Poop$0.99
- Tons of Poop$3.99
- Unlimited Pack$3.99
Show 2 moreShow fewer
- Special Pack$3.99
- Truck of Poops$14.99
Slime Evolution
- 20 Gem$0.99
- 110 Gem$4.99
- 240 Gem$9.99
Show 1 moreShow fewer
- 1400 Gem$49.99
Questions
Is Brian free?
Is Slime Evolution free?
Which has better reviews, Brian or Slime Evolution?
Do Brian or Slime Evolution have ads?
Which is updated more often, Brian or Slime Evolution?
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