Comparison

Mousebusters vs Parasite Days

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

Head to head
About

Mousebusters

Embark on a pixel art adventure to vanquish spectral entities plaguing an apartment. As a member of the Mouse Busters, you'll help your master clear out ghosts and save residents from emotional darkness. This casual horror game progresses through tapping, character interaction, and object examination.

Highlights
  • Pixel art graphics
  • Story progression by tapping
  • Character interaction
  • Object examination
  • Casual horror adventure
  • Ghost busting gameplay
Features
Read full description

It's our duty to wipe out the apartment's ghosts and save the residents from the growing darkness inside their hearts. We're the Mouse Busters! The ghosts in the apartment are takin' a toll on the residents' emotions. And we, the Mouse Busters, are the unsung heroes who'll wipe out all those evil ghosts. Hey, newbie. You can call me "Master." Hmm? Ya look like ya wanna say somethin'. You tellin' me the name "Mouse Busters" sounds like wiping out mice instead of ghosts? ... Oh, come on. That doesn't matter. All that matters is that it sounds cool! ------------ This is a simple game where the story progresses by tapping the screen, talking to characters and checking objects. Enjoy this casual horror adventure game by helping your master wipe out the ghosts that haunt the apartment.

About

Parasite Days

Awaken with a strange creature on your arm in this unique adventure game. Decide whether to fight the parasite or succumb to its draining effects. Manage your health, discover food combos, and make choices that lead to multiple endings.

Highlights
  • Parasite-purging adventure
  • Health management
  • Food combo discovery
  • Simple controls
  • Multiple endings
  • Choice-driven narrative
Features
Read full description

"Good morning, Hostbody!" In a not-so-distant future, the world is dying. You wake up to find a strange but cute creature growing from your arm. It is a parasite — one that drains its host's vitality. Do you purge it... or will it purge you first? The world's first parasite-raising survival adventure. ■ Features [1] Supply management is your lifeline Each day, choose supplies (food, items, medicine) to keep your immune system strong. Survive the sudden "absorption seizures" with smart decisions. [2] Food combos trigger chemical reactions Mix and match supplies to discover powerful effects. Experiment to find your own winning combinations. [3] Your choices change everything Multiple endings based on how you treat the parasite and the people of a dying world. Happy endings, bad endings — find the one that's yours. [4] Charming pixel art and a bittersweet world Retro pixel art paired with an atmospheric soundtrack. Cute, lonely, and a little heartbreaking — everyday life at the end of the world. [5] Simple controls anyone can enjoy No difficult action required. Tap-only mini-games with no stamina or timers. Play at your own pace. ■ Great for players who love - Pixel art / retro indie games - Dystopian sci-fi and post-apocalyptic stories - Story-driven games with multiple endings - Relaxed simulation and management gameplay ■ Notes - Fully playable to the end for free (ads are shown). - No story connection to previous titles. - Includes both happy and bad endings. Cute, terrifying, and a little heartbreaking. Step into the story of a limbless parasite and its Hostbody in a dying world.

Screenshots

Mousebusters4 screens
Parasite Days4 screens

Verdict

The call

The clearest difference is ratings volume: Mousebusters at 1.5K against Parasite Days's 227. Mousebusters also leads on iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and update cadence 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. Mousebusters sells 7 one-off in-app purchases and Parasite Days 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

On the App Store both sit at effectively the same score — 4.8 for Mousebusters against 5.0 for Parasite Days. That said, the two scores are not equally well evidenced: Mousebusters has 1.5K ratings behind it against 227, so its average is the more settled of the two. Written reviews split almost evenly too, at 94% and 94% positive.

UpkeepUpdate frequency

Mousebusters ships an update every 2 weeks, Parasite Days fortnightly. Both last shipped on October 29, 2026.

Scorecard2 real differences · 8 level
Mousebusters versus Parasite Days: the parameters behind the verdict, then further details
ParameterMousebustersParasite Days
PriceFreeFree
Rating4.8 (1.5K ratings)5.0 (227 ratings) — better
Positive reviews93.6% of reviews94.4% of reviews — better
Number of ratings1.5K — better227
Update frequencyEvery 2 weeks — betterFortnightly
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size76 MB141 MB
Age rating9+12+
DeveloperOdencat Inc.zxima.LLC

Customer experience

Mousebusters

All ratings1,531 ratings
Positive96.8%
Neutral1.3%
Negative1.9%
Written reviews671 reviews
Positive93.6%
Neutral2.4%
Negative4.0%

Parasite Days

All ratings224 ratings
Positive99.1%
Neutral0.9%
Negative0.0%
Written reviews89 reviews
Positive94.4%
Neutral2.2%
Negative3.4%

User reviews

Mousebusters

From 1.5K App Store ratings

What we love

  • 👍 Fun and entertaining gameplay
  • 🎨 Cute pixel art style
  • 📖 Engaging and emotional story
  • 🎶 Great background music
  • 🔍 Interesting characters and lore

Room to improve

  • 💰 Paywall for full game access
  • ⏱️ Tedious coffee bean collection
  • 🤖 Repetitive ghost-hunting gameplay

Parasite Days

From 227 App Store ratings

What we love

  • 😭 Emotionally impactful story
  • 💖 Adorable and charming characters (especially the parasite)
  • 🤩 Highly addictive and engaging gameplay
  • 💎 Multiple endings and replayability
  • 🎨 Beautiful pixel art and charming design

Room to improve

  • 🐛 Repetitive gameplay elements
  • 🗣️ Text can be hard to read
  • ⏳ Long wait times for ads
  • 😵 Overwhelming number of ads for some users
  • 🤔 Some users find it difficult to unlock certain endings/flags

Bugs and requests

Mousebusters

Reported bugs

2 issues
  • Audio glitches and cutouts
  • Occasional crashes

Requested features

3 requests
  • More gameplay variety
  • Multiple story endings
  • Reduced coffee bean requirement

Parasite Days

Reported bugs

7 issues
  • Cannot submit robot in mini-game, leading to evaluation of E
  • Completed robot displayed on normal screen after bug
  • Cannot submit robot in cooperation menu, leading to it being stuck in 'prohibited' state
  • Bug where the robot is stuck on screen after the cooperation menu issue
  • Cannot obtain 'Dropped too much!' flag even after dropping supplies multiple times
Show 2 more
  • Ad loading errors preventing gameplay
  • Some flags are unobtainable

Requested features

9 requests
  • More endings
  • New characters
  • Russian language translation
  • Add more dialogue for milestones (e.g., day 50, 100)
  • New game + or more content to extend gameplay
Show 4 more
  • Ability to add glasses to the parasite (already exists but some users want it more prominently)
  • More hints for unlocking endings/flags
  • New endings where you are the parasite
  • More gameplay outside of the foundation

In-app purchases

7 purchases

Mousebusters

One-time7
  • Bronze Support$0.99
  • Remove Ads$2.99
  • Silver Support$2.99
Show 4 more
  • Extra Episode$2.99
  • Gold Support$4.99
  • Complete Package$4.99
  • Platinum Support$9.99
4 purchases

Parasite Days

One-time4
  • Laser Threader$0.99
  • Life Enforcer$0.99
  • Rewarded Ads Off$1.99
Show 1 more
  • Donate$2.99

Questions

Is Mousebusters free?
Mousebusters is free to download, with in-app purchases available.
Is Parasite Days free?
Parasite Days is free to download, with in-app purchases available.
Which has better reviews, Mousebusters or Parasite Days?
Parasite Days is rated higher. Mousebusters averages 4.8 out of 5 from 1.5K ratings, while Parasite Days averages 5.0 from 227 ratings.
Do Mousebusters or Parasite Days have ads?
Both Mousebusters and Parasite Days show ads.
Which is updated more often, Mousebusters or Parasite Days?
Mousebusters ships an update every 2 weeks, and Parasite Days fortnightly. Most recently, Mousebusters was updated on October 29, 2026 and Parasite Days on October 29, 2026.

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