Comparison

Box Builder Online vs Contagious Mayhem

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

Head to head
About

Box Builder Online

Features
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Note: Box Builder 3D Online is an online game. A good connection to internet is required. Check your connection to internet before you start playing! Box Builder 3D Online is an online 3d arcade casual game. You can play online with strangers and offline with your computer or friends. Good luck and have fun! FEATURES: - Beautiful Graphics - Global Ranking - Shop - 18 Boxes - 9 Cranes - Small size (No additional downloads) - Perfect optimization even for weak devices! - PVC and PVP ONLINE MODE: - 2 Players Let's start playing!

About

Contagious Mayhem

Features
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Get ready to dive into the microscopic world with "Contagious Mayhem"! This game provides a perfect blend of fun, learning, and excitement, that transforms you into a virtual germ fighter. In this fast-paced and thrilling game, your mission is to sanitize various surfaces and spaces, all teeming with a variety of microbes that you need to identify and disinfect. As you progress, you'll encounter tougher, more resilient germs, bacteria, viruses, and fungi, each with its unique strengths and weaknesses. Utilize a wide array of disinfectants, each equipped with unique capabilities to combat different types of microbes. The game encourages strategic thinking as players must decide the best approach to handle each wave of microbial invasion. But the game isn't just about mayhem! It's also an educational tool, giving players a better understanding of different types of microbes, their characteristics, and how they spread. Through engaging gameplay, players learn about hygiene and public health in a way that's fun and interactive. With high-quality graphics, a captivating storyline, and countless levels, Contagious Mayhem offers endless entertainment while promoting science education. Perfect for players of all ages looking for a game that's as challenging as it is enlightening. So gear up and join the fight against germs in Contagious Mayhem, where every clean surface is a victory! The game has been developed in the Peliselli project (The project is funded by the REACT-EU instrument's appropriations as part of the actions implemented by the European Union in response to the COVID-19 pandemic) and in the ARPO project funded by the Regional Council of Satakunta. The making of the game has also been funded by the Academy of Finland (decisions 337863 and 337861). In collaboration with: SAMK โ€“ Wander Research Centre, SAMK, and the City of Rauma.

Screenshots

Box Builder Online4 screens
Contagious Mayhem4 screens

Verdict

The call

The clearest difference is in-app purchases: Contagious Mayhem at none against Box Builder Online's 2. Contagious Mayhem also leads on ads (none vs shown) and update cadence (every 2 months vs every 9 months). On price, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Box Builder Online sells 2 one-off in-app purchases. Contagious Mayhem asks for nothing beyond the download.

UpkeepUpdate frequency

Box Builder Online ships an update every 9 months, Contagious Mayhem every 2 months. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

Scorecard3 real differences ยท 3 level
Box Builder Online versus Contagious Mayhem: the parameters behind the verdict, then further details
ParameterBox Builder OnlineContagious Mayhem
PriceFreeFree
Update frequencyEvery 9 monthsEvery 2 months โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 โ€” better
Further details โ€” not scored
Size280 MB147 MB
Age rating4+12+
DeveloperTran VietSatakunnan Ammattikorkeakoulu Oy

In-app purchases

2 purchases

Box Builder Online

One-time2
  • Remove Ads$2.99
  • Unlock All$2.99
None

Contagious Mayhem

No in-app purchases

Questions

Is Box Builder Online free?
Box Builder Online is free to download, with in-app purchases available.
Is Contagious Mayhem free?
Contagious Mayhem is free to download, with no in-app purchases.
Do Box Builder Online or Contagious Mayhem have ads?
Box Builder Online shows ads; Contagious Mayhem does not.
Which is updated more often, Box Builder Online or Contagious Mayhem?
Box Builder Online ships an update every 9 months, and Contagious Mayhem every 2 months. Most recently, Box Builder Online was updated on October 20, 2026 and Contagious Mayhem on October 18, 2026.

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