Phage Invaders vs Bacterias
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Control Cas9-inspired hero
- Slash invading DNA
- Progressive difficulty levels
- Survival mode
- High score leaderboards
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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
Bacterias
Create unique monsters by injecting bacteria into creatures. Discover new species and expand your collection of bizarre beings. A simple yet engaging game for those who enjoy creature creation and collection.
- Inject bacteria into creatures
- Create unique monsters
- Discover new species
- Collect monsters
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Inject bacteria into creature to get monster !
Screenshots
Verdict
The clearest difference is rating: Phage Invaders at 4.4 against Bacterias's 3.8. Phage Invaders also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 months). Bacterias's advantage is ratings volume (205 vs 8). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Phage Invaders holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Bacterias has 205 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 67% of Phage Invaders's written reviews are positive against 40% of Bacterias's.
Phage Invaders ships an update every 4 days, Bacterias every 3 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | Phage Invaders | Bacterias |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (8 ratings) — better | 3.8 (205 ratings) |
| Positive reviews | 66.7% of reviews — better | 40.0% of reviews |
| Number of ratings | 8 | 205 — better |
| Update frequency | Every 4 days — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12 — better | 15.0 |
| Further details — not scored | ||
| Size | 113 MB | 241 MB |
| Age rating | 4+ | 12+ |
| Developer | Innovative Genomics Institute | Yso Corp |
Customer experience
Phage Invaders
Bacterias
Bugs and requests
Phage Invaders
Not enough reviews yet to summarise bugs or requests.
Bacterias
Reported bugs
7 issues- Monster gets too big in battle
- Monster falls through the ground
- Game lags heavily
- Game won't let users play
- Too many glitches
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- Info text gets too huge
- iPad battery drains fast
Requested features
9 requests- Add more animals (lion, elephant, zebra)
- Add decorated cages for monsters
- Add a battlefield to challenge other people
- Add more DNA
- Add more money to spend
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- Fix monster size in battles
- Fix ads frequency
- Add less ads
- Add more creatures
In-app purchases
Phage Invaders
No in-app purchases
Bacterias
No in-app purchases
Questions
Is Phage Invaders free?
Is Bacterias free?
Which has better reviews, Phage Invaders or Bacterias?
Do Phage Invaders or Bacterias have ads?
Which is updated more often, Phage Invaders or Bacterias?
Other comparisons
