Comparison

Contagious Mayhem vs Double Knight

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

Head to head
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 – Wander Research Centre, SAMK, and the City of Rauma.

About

Double Knight

Embark on a chaotic roguelike adventure as a brave knight battling hordes of undead monsters in a ghastly dungeon. Reclaim your stolen chicken by doubling your strength and navigating treacherous traps and fiery obstacles. Each run offers a unique experience with ever-changing dungeons and power-up opportunities.

Highlights
  • Chaotic action roguelike gameplay
  • Reclaim stolen chicken objective
  • Battle swarms of undead monsters
  • Navigate traps and fire walls
  • Double your knight's numbers
  • Power up in serene forest groves
  • Ever-changing dungeon layouts
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Double Knight is a chaotic action roguelike about a little knight delving into a ghastly dungeon to reclaim his stolen chicken. Swarms of undead monsters, walls of fire, and nefarious traps will test your strength and resolve every step of the way. The odds are against you, so you'll have to double up. Grow your numbers and turn the tide in your favor. Visit serene forest groves to power up and make every run a new experience as you progress through the ever-changing dungeon. No two plays will be the same.

Screenshots

Contagious Mayhem4 screens
Double Knight4 screens

Verdict

The call

The clearest difference is in-app purchases: Contagious Mayhem at none against Double Knight's 1. Contagious Mayhem also leads on iOS requirement (12.0 vs 15.0). Double Knight's advantage is update cadence (every 9 days vs every 2 months). On price, ads 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. Double Knight sells 1 one-off in-app purchase. Contagious Mayhem asks for nothing beyond the download.

UpkeepUpdate frequency

Contagious Mayhem ships an update every 2 months, Double Knight every 9 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Contagious Mayhem versus Double Knight: the parameters behind the verdict, then further details
ParameterContagious MayhemDouble Knight
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size147 MB432 MB
Age rating12+9+
DeveloperSatakunnan Ammattikorkeakoulu OyStickerbush Studios LLC

In-app purchases

None

Contagious Mayhem

No in-app purchases

1 purchases

Double Knight

One-time1
  • Unlock Full Game$4.99

Questions

Is Contagious Mayhem free?
Contagious Mayhem is free to download, with no in-app purchases.
Is Double Knight free?
Double Knight is free to download, with in-app purchases available.
Do Contagious Mayhem or Double Knight have ads?
Neither Contagious Mayhem nor Double Knight shows ads.
Which is updated more often, Contagious Mayhem or Double Knight?
Contagious Mayhem ships an update every 2 months, and Double Knight every 9 days. Most recently, Contagious Mayhem was updated on November 4, 2026 and Double Knight on October 31, 2026.

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