Comparison

Brian vs Slime Evolution

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

Head to head
About

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.

Highlights
  • Physics-based gameplay
  • Pet evolution and mutation
  • Tamagotchi-style care
  • Side-scrolling obstacle navigation
  • DNA injection for mutations
  • Black humor elements
Features
Read full description

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

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 :)

Screenshots

Brian4 screens
Slime Evolution4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Brian versus Slime Evolution: the parameters behind the verdict, then further details
ParameterBrianSlime Evolution
PriceFreeFree
Rating3.8 (64 ratings)4.8 (597 ratings) — better
Positive reviews44.4% of reviews91.2% of reviews — better
Number of ratings64597 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better13.0
Further details — not scored
Size79 MB111 MB
Age rating9+4+
DeveloperSweatyChair Pty. Ltd.SeHyeon Im

Customer experience

Brian

All ratings64 ratings
Positive65.6%
Neutral9.4%
Negative25.0%
Written reviews45 reviews
Positive44.4%
Neutral13.3%
Negative42.2%

Slime Evolution

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

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

5 purchases

Brian

One-time5
  • Bag of Poop$0.99
  • Tons of Poop$3.99
  • Unlimited Pack$3.99
Show 2 more
  • Special Pack$3.99
  • Truck of Poops$14.99
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

Questions

Is Brian free?
Brian is free to download, with in-app purchases available.
Is Slime Evolution free?
Slime Evolution is free to download, with in-app purchases available.
Which has better reviews, Brian or Slime Evolution?
Slime Evolution is rated higher. Brian averages 3.8 out of 5 from 64 ratings, while Slime Evolution averages 4.8 from 597 ratings.
Do Brian or Slime Evolution have ads?
Slime Evolution shows ads; Brian does not.
Which is updated more often, Brian or Slime Evolution?
Brian ships an update every 3 months, and Slime Evolution every 2 months. Most recently, Brian was updated on October 9, 2026 and Slime Evolution on October 13, 2026.

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