Comparison

Bacterias vs Rumble Bag

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

Head to head
About

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.

Highlights
  • Inject bacteria into creatures
  • Create unique monsters
  • Discover new species
  • Collect monsters
Features
Read full description

Inject bacteria into creature to get monster !

About

Rumble Bag

Strategize and fill your backpack with powerful heroes and weapons to battle endless waves of monsters. This roguelike RPG offers unique skill combinations and strategic depth for a fun, casual gaming experience.

Highlights
  • Summon and merge dozens of heroes
  • Battle endless waves of monsters
  • Unique roguelike skill combinations
  • Strategic backpack management
  • Casual and fun gameplay
Features
Read full description

Get ready to experience an exciting war of heroes in Rumble Bag! Is your strategy ready? Is your backpack ready? Well, Flillian,you are ready to strategize to win. Flex your fingers and fill your backpack with powerful swords, armor and weapons to unleash the true power of your smile! With the right strategy, you can dominate the battle, harness the power of attackers and weapons, and control monsters with exciting game decisions. But remember, Rumble Bag is not just a typical rpg adventure game; it's a whole new world in your backpack! With dozens of heroes to summon and merge, there are always new strategies to try in your backpack. Get ready to face endless waves of monsters. In your backpack, explore a unique roguelike skill experience with infinite combinations that make every battle unique. Do you have what it takes to strategize, can you survive the war and create a legend? Strategize, make decisions, and enjoy this very fun casual game. But remember, Rumble Bag is not just about battles, it's about how you strategize and add a touch of intelligence to leisure with an extremely relaxing and fun game. Let's see what Rumble Bag, a game that tests your strategic skills and backpack management, has to offer: 【Heroes galore】With a backpack and strategy, summon and merge dozens of heroes to build your ultimate battle team. 【Endless battles】Strategize to fend off waves of monsters and bosses waiting to test your skills. 【Skill experience】Experience a new roguelike skill with endless combinations thanks to great strategy and a backpack full of options. 【Casual excitement】This casual game is a perfect blend of fun and strategy that will keep you entertained. Rumble Bag truly redefines what it means to combine strategy and fun! So why wait? Put on your backpack, hone your strategy, and enter a world of epic battles, engaging strategies! Get your backpack ready, hone your strategy, and download Rumble Bag now! Subscription Agreement Notice: 1. Content: Remove all ads, 15 stamina, 100 diamonds, 30 random fragments per day, lasts for 1 week. Increase stamina limit, 30 stamina, 200 diamonds, 50 fragments per day, lasts for 1 month. 2. Subscription duration: 7 days、1month. - Weekly subscription, no discount, $4.99. - Monthly subscription, no discount, $8.99. 3. Payment will be charged to your account at confirmation of purchase. 4. Subscriptions will automatically renew at the same price and duration as the original "Weekly", "Monthly" packages, unless auto-renew is turned off at least 24 hours in advance before the end of the current previous subscription period. 5. Free trial subscriptions will automatically renew unless canceled 24 hours before renewal. 6. The account will be automatically debited for the renewal of the selected subscription (weekly or monthly) within 24 hours before the end of the current subscription period. 7. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Please head to Settings - iTunes Store & App Store - Check Apple ID - Account Settings - Subscription. Privacy Policy: https://www.happytapland.com/policy.html Terms Of Use:https://www.happytapland.com/service.html

Screenshots

Bacterias4 screens
Rumble Bag4 screens

Verdict

The call

The clearest difference is rating: Rumble Bag at 4.8 against Bacterias's 3.8. Rumble Bag also leads on update cadence (every 8 days vs every 3 months) and ratings volume (4.4K vs 205). Bacterias's advantage is in-app purchases (none vs 22). On price, review sentiment, ads 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. Rumble Bag sells 22 in-app purchases, starting at $4.99 per 7 days. Bacterias asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Rumble Bag holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Rumble Bag has 4.4K ratings behind it against 205, so its average is the more settled of the two. Written reviews complicate that: 40% of Bacterias's written reviews are positive against 37% of Rumble Bag's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Bacterias ships an update every 3 months, Rumble Bag every 8 days. Both last shipped on September 24, 2026.

Scorecard4 real differences · 6 level
Bacterias versus Rumble Bag: the parameters behind the verdict, then further details
ParameterBacteriasRumble Bag
PriceFreeFree
Rating3.8 (205 ratings)4.8 (4.4K ratings) — better
Positive reviews40.0% of reviews — better37.0% of reviews
Number of ratings2054.4K — better
Update frequencyEvery 3 monthsEvery 8 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size241 MB311 MB
Age rating12+4+
DeveloperYso CorpHappyTapLand Technology Co., Ltd.

Customer experience

Bacterias

All ratings205 ratings
Positive68.8%
Neutral7.3%
Negative23.9%
Written reviews35 reviews
Positive40.0%
Neutral11.4%
Negative48.6%

Rumble Bag

All ratings4,392 ratings
Positive94.3%
Neutral2.5%
Negative3.2%
Written reviews308 reviews
Positive37.0%
Neutral15.6%
Negative47.4%

User reviews

Bacterias

From 205 App Store ratings

What we love

  • 👍 Fun and creative game
  • 👍 Original game concept
  • 👍 Good for kids
  • 👍 Engaging gameplay
  • 👍 Interesting fight sequence

Room to improve

  • ❌ Excessive ads
  • ❌ Frequent ads
  • ❌ Ads interrupt gameplay
  • ❌ Glitchy gameplay
  • ❌ Game lags significantly

Rumble Bag

From 4.4K App Store ratings

What we love

  • 👍 Good game mechanics
  • 🚀 Fun and engaging gameplay
  • 💡 Unique weapon merging concept

Room to improve

  • 🔍 Excessive use of ads for progression
  • 🔒 Limited bag space without watching ads
  • 🐛 Bugs and stability issues
  • 🔋 Offline play limitations

Bugs and 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
Show 2 more
  • 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
Show 4 more
  • Fix monster size in battles
  • Fix ads frequency
  • Add less ads
  • Add more creatures

Rumble Bag

Reported bugs

3 issues
  • Levels not progressing after completion
  • Freezing and crashing on some devices
  • Reward collection issues (e.g., Day 7 reward)

Requested features

4 requests
  • Offline progression without ads
  • More weapon variety and customization
  • Improved level design and difficulty balance
  • Ability to save progress across sessions

In-app purchases

None

Bacterias

No in-app purchases

22 purchases

Rumble Bag

Subscriptions2
  • weeklycard_subscription_ios$4.997 Days
  • monthlycard_subscriptiond_ios$8.991 Month
One-time20
  • grothfund001_ios$1.99
  • pack002_ios$1.99
  • grothfund002_ios$1.99
Show 17 more
  • grothfund003_ios$1.99
  • diamonds001_ios$1.99
  • grothfund004_ios$2.99
  • grothfund005_ios$2.99
  • grothfund007_ios$2.99
  • grothfund006_ios$2.99
  • grothfund009_ios$2.99
  • grothfund008_ios$2.99
  • grothfund010_ios$2.99
  • pack003_ios$4.99
  • diamonds002_ios$4.99
  • vipcard_ios$9.99
  • pack004_ios$9.99
  • pack001_ios$9.99
  • pack005_ios$19.99
  • diamonds003_ios$19.99
  • pack006_ios$29.99

Questions

Is Bacterias free?
Bacterias is free to download, with no in-app purchases.
Is Rumble Bag free?
Rumble Bag is free to download, with in-app purchases available.
Which has better reviews, Bacterias or Rumble Bag?
Rumble Bag is rated higher. Bacterias averages 3.8 out of 5 from 205 ratings, while Rumble Bag averages 4.8 from 4.4K ratings.
Do Bacterias or Rumble Bag have ads?
Both Bacterias and Rumble Bag show ads.
Which is updated more often, Bacterias or Rumble Bag?
Bacterias ships an update every 3 months, and Rumble Bag every 8 days. Most recently, Bacterias was updated on September 24, 2026 and Rumble Bag on September 24, 2026.

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