Comparison

Phage Invaders vs Evolution Merge

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

Head to head
About

Phage Invaders

Defend the city of Bacterium from viral invaders by controlling a Cas9-inspired hero. Slash invading DNA and viral parts to protect the city. Features progressive levels and an infinite survival mode.

Highlights
  • Control Cas9-inspired hero
  • Slash invading DNA
  • Progressive difficulty levels
  • Survival mode
  • High score leaderboards
Features
Read full description

Defend the city of Bacterium from viral annihilation! The city is under attack and needs a hero to save the day! Play as noble defender Cris Perotein. You’ll need to act fast to stop an army of viral villains from taking over the city. Will you be quick enough? Use the on-screen controller to move Cris Perotein, our Cas9-inspired hero. Run Cris into the invading DNA to slash and destroy it. Careful, once viral parts appear, nothing can stop them! Features: • Play through levels that get harder and harder to learn the CRISPR ropes. • Try "survival mode" to battle a brutal, infinite onslaught of phage invaders. • Add your high score to the Game Center and see how you rank! *** Share on social media with #PhageInvaders *** About the IGI: The Innovative Genomics Institute is an academic research organization in the Bay Area. The IGI excites, engages, and empowers diverse audiences with clear and reliable resources. To learn more, visit https://www.innovativegenomics.org

About

Evolution Merge

Guide creatures from single-cell organisms to apex predators by eating and evolving. Merge specimens to discover new species and climb the food chain in this engaging evolution simulator.

Highlights
  • Chomp and eat to grow
  • Evolve through multiple creature stages
  • Merge specimens to create new species
  • Unlock unique creatures
  • Navigate vibrant game worlds
  • Survival of the fittest gameplay
Features
Read full description

► CHOMP YOUR WAY UP THE FOOD CHAIN Did you love biology lessons at school? Probably not. But that’s certainly not going to stop you from loving this unique, all-action evolution simulator. It easily brings the world of evolutionary biology to life in glorious technicolour on the screen of your device. Even the big starts small – single-cell is small in this case – and you’ll need to eat and eat to prove your fit to clamber up the food chain and take the leap to reach the next stage of evolution in this fun, fast-moving science game. ► RACE THROUGH EVOLUTION • Life’s rich pageant: Start the game as a tiny bacteria in a vast ocean, feed and grow to become a fish, then a turtle, then a frog and on through all the stages of evolution. You’ll never forget your first step on dry land! With each new type of creature come subtle changes to the gameplay that will keep you engaged in the game and always hungry for more. • Fun is in its DNA: In the classic gameplay of this super fun science game you have to guide your creature to the tastiest snacks, not all of whom are entirely happy to be your feed. Eat your fill to complete each level and watch out for some not entirely scientific bonus treats that will get you to your goal even faster (what’s that pizza doing in the jungle?). • The price of progress: Complete the goal in each level of the game, and you’ll get coins to buy more specimens. Merge them together, and through the magic of mutation you’ll create a new species. Don’t get over-confident though – you’ll need a pile of coins and multiple merges to move to the next stage of evolution, so get back in the game and keep eating for all you’re worth. • Plenty more fish in the sea: You’re hungry for progress, it’s all about feeding and growing, and there’ll be hundreds of smaller creatures to feast on in each level of the game. Though don’t forget there’s always something higher up the food chain that’s just as eager to feed on you. It’s the survival of the fittest! • The glorious evolution: This beautifully designed simulator features gorgeously bright and detailed gamescapes, with a unique cute and colourful creature to unlock each time you take a step up the evolutionary ladder. ► AIM FOR THE APEX If success is in your DNA and you’re determined to make it to the very top of the food chain, you’re bound to enjoy this fun and frantic science-based feeding frenzy of an evolutionary simulator. Looking for an original, engaging casual game that would help you grow as a person, or at least as an amoeba, fish or turtle? Then download Evolution Merge right now and get chomping your way up the very top of the evolutionary ladder. Privacy Policy: https://say.games/privacy-policy Terms of Use: https://say.games/terms-of-use

Screenshots

Phage Invaders3 screens
Evolution Merge4 screens

Verdict

The call

The clearest difference is rating: Evolution Merge at 4.7 against Phage Invaders's 4.0. Evolution Merge also leads on ratings volume (59K vs 9). Phage Invaders's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support 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. Evolution Merge sells 5 one-off in-app purchases. Phage Invaders asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Evolution Merge holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Evolution Merge has 59K ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 67% of Phage Invaders's written reviews are positive against 57% of Evolution Merge's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Phage Invaders ships an update every 4 days, Evolution Merge every 6 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard8 real differences · 2 level
Phage Invaders versus Evolution Merge: the parameters behind the verdict, then further details
ParameterPhage InvadersEvolution Merge
PriceFreeFree
Rating4.0 (9 ratings)4.7 (59K ratings) — better
Positive reviews66.7% of reviews — better57.3% of reviews
Number of ratings959K — better
Update frequencyEvery 4 days — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12 — better15.0
Further details — not scored
Size113 MB463 MB
Age rating4+4+
DeveloperInnovative Genomics InstituteSayGames LTD

Customer experience

Phage Invaders

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Evolution Merge

All ratings58,714 ratings
Positive91.5%
Neutral4.4%
Negative4.1%
Written reviews354 reviews
Positive57.3%
Neutral9.6%
Negative33.1%

Bugs and requests

Phage Invaders

Not enough reviews yet to summarise bugs or requests.

Evolution Merge

Reported bugs

3 issues
  • Game crashes or freezes when certain ads are displayed
  • Inability to merge top-level creatures as suggested by the game
  • Progress reset or lost after reaching certain stages

Requested features

4 requests
  • More diverse evolution paths beyond just reaching humans
  • Option to purchase ad-free version or remove ads
  • Ability to play as unlocked creatures after reaching the end
  • Smoother progression and less repetitive grind

In-app purchases

None

Phage Invaders

No in-app purchases

5 purchases

Evolution Merge

One-time5
  • Ticket Pack$2.99
  • No ADS$4.99
  • Medium Ticket Pack$9.99
Show 2 more
  • Large Ticket Pack$24.99
  • Extra Large Ticket Pack$49.99

Questions

Is Phage Invaders free?
Phage Invaders is free to download, with no in-app purchases.
Is Evolution Merge free?
Evolution Merge is free to download, with in-app purchases available.
Which has better reviews, Phage Invaders or Evolution Merge?
Evolution Merge is rated higher. Phage Invaders averages 4.0 out of 5 from 9 ratings, while Evolution Merge averages 4.7 from 59K ratings.
Do Phage Invaders or Evolution Merge have ads?
Evolution Merge shows ads; Phage Invaders does not.
Which is updated more often, Phage Invaders or Evolution Merge?
Phage Invaders ships an update every 4 days, and Evolution Merge every 6 weeks. Most recently, Phage Invaders was updated on October 24, 2026 and Evolution Merge on October 27, 2026.

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