Comparison

Idle Mastermind vs Rando'Knights

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

Head to head
About

Idle Mastermind

Embrace your inner supervillain in this idle simulation game. Build a secret lair, recruit henchmen, and execute dastardly plans to take over the world. Choose from three unique villains, each with their own strategies and grand schemes.

Highlights
  • Play as 3 distinct supervillains
  • Build and customize your evil lair
  • Hire and manage an army of henchmen
  • Raid cities for resources
  • Unlock new research and skills
  • Execute evil grand plans
Features
Read full description

Ever wanted to be the villain? To build a lair? Hire henchmen? Fight superheroes? Concoct dastardly plans? Raid a city? Or… take over the world? No? What, really? Sure you do! Idle Mastermind, from the makers of Idle Apocalypse, is the best supervillain simulator of 2020! Play as three supervillains. The techy but tiny: Dr DOS. The gangster crime boss: Yara. Or the unpredictable: LOL. Each has their own evil grand plan. Build a lair to run your empire from. Hire a bunch of evil henchmen to do your bidding. Raid the city above to gain precious resources. Unlock new research and skills to improve your criminal, idle empire. When you’re ready, execute your evil plan and bring about the apocalypse! Play as 3 distinct villains, each with: + A unique lair with special floors and henchmen. + Different strategies, skills and stories. + Unique resource management styles. Build your dream lair: + 30 unique floors. + Floors that will generate resources while offline. + Special floors with unique gameplay elements. Hire an army of evil thugs: + 20+ henchmen. + Different classes, abilities. + Unique resource management gameplay. And more...! + Collect heaps of skins. + Complete events. + Join the Evil Eye Association. On top of that it has all the humour and inane chatter of a Grumpy Rhino game. The makers of Idle Apocalypse. Lovers of simulation games and incremental clickers won’t be able to put down this dastardly, near criminal RPG.

About

Rando'Knights

Collect, modify, and upgrade unique figurines in this offline game. Discover their rarity, expose them for passive income, and sacrifice others to enhance your favorites. Complete quests to unlock new features and progress through your collection.

Highlights
  • Figurine collection and modification
  • Rarity-based figurine ranking
  • Passive income generation
  • Figurine sacrifice for upgrades
  • Quest completion for rewards
  • Unlockable features
Features
Read full description

- Offline game about figurine collection and modification - The rank of a figurine change depending on its rarity, discover them all! - Expose your best figurine to generate passive income - Sacrifice figurines to upgrade your favorites with the ritual - Upgrade everything and unlock new features! - Complete urgent quests to get tickets and tokens - Complete collection quests to progress in the game! You can enjoy 95% of the game for free, and without any ads! If you want to support us, please buy the premium mode, which allows you to enjoy all the content! Others inapp purchases are pay to fast. We don't recommend it if you want to play the game as it was designed.

Screenshots

Idle Mastermind4 screens
Rando'Knights4 screens

Verdict

The call

The clearest difference is ads: Rando'Knights at none against Idle Mastermind's shown. Rando'Knights also leads on update cadence (every 5 days vs every 6 weeks) and review sentiment (92% vs 68%). Idle Mastermind's advantage is ratings volume (440 vs 30). On price, rating, in-app purchases 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. Idle Mastermind sells 12 one-off in-app purchases and Rando'Knights sells 7 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 — 4.6 for Idle Mastermind against 4.5 for Rando'Knights. That said, the two scores are not equally well evidenced: Idle Mastermind has 440 ratings behind it against 30, so its average is the more settled of the two. Written reviews are what separate them: 68% of Idle Mastermind's written reviews are positive against 92% of Rando'Knights's.

UpkeepUpdate frequency

Idle Mastermind ships an update every 6 weeks, Rando'Knights every 5 days. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
Idle Mastermind versus Rando'Knights: the parameters behind the verdict, then further details
ParameterIdle MastermindRando'Knights
PriceFreeFree
Rating4.6 (440 ratings) — better4.5 (30 ratings)
Positive reviews67.9% of reviews91.7% of reviews — better
Number of ratings440 — better30
Update frequencyEvery 6 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size286 MB156 MB
Age rating12+9+
DeveloperGrumpy Rhino Games LTDUseless Corp

Customer experience

Idle Mastermind

All ratings440 ratings
Positive90.7%
Neutral3.4%
Negative5.9%
Written reviews56 reviews
Positive67.9%
Neutral5.4%
Negative26.8%

Rando'Knights

All ratings30 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews12 reviews
Positive91.7%
Neutral0.0%
Negative8.3%

Bugs and requests

Idle Mastermind

Reported bugs

8 issues
  • Game crashes when Counterfeit character robs buildings
  • Random audio error producing persistent chopping/high-five sounds
  • Progress randomly deleted without explanation
  • Game crashes at startup after updates
  • Laboratory won't produce microchips, causing soft-lock
Show 3 more
  • Ad boost offers not functioning
  • Graphics rendering issues on some iPhones
  • Mission quest exploit allowing infinite gem farming

Requested features

6 requests
  • Increase progression speed by 20%
  • VIP program with spending-based rewards and stat bonuses
  • Skin texture overhaul with Sid's tower theme
  • More content and longer event durations
  • Better balance between free and paid progression paths
Show 1 more
  • Additional activities in city and base areas

Rando'Knights

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Idle Mastermind

One-time12
  • 200 Gems$4.99
  • 500 Gems$9.99
  • Event Pack$9.99
Show 9 more
  • Yara Starter Pack$9.99
  • Remove Ads$9.99
  • Seasonal Bundle$9.99
  • More Everything$14.99
  • Golden Throne$14.99
  • 1,250 Gems$19.99
  • LOL Starter Pack$24.99
  • 2,500 Gems$29.99
  • Double Trouble$49.99
7 purchases

Rando'Knights

One-time7
  • 100 Tokens$1.99
  • 600 Tokens$4.99
  • Premium Mode$5.99
Show 4 more
  • Premium Origin Booster$7.99
  • 1400 Tokens$8.99
  • Reverse Origin Booster$12.99
  • 8000 Tokens$44.99

Questions

Is Idle Mastermind free?
Idle Mastermind is free to download, with in-app purchases available.
Is Rando'Knights free?
Rando'Knights is free to download, with in-app purchases available.
Which has better reviews, Idle Mastermind or Rando'Knights?
Idle Mastermind is rated higher. Idle Mastermind averages 4.6 out of 5 from 440 ratings, while Rando'Knights averages 4.5 from 30 ratings.
Do Idle Mastermind or Rando'Knights have ads?
Idle Mastermind shows ads; Rando'Knights does not.
Which is updated more often, Idle Mastermind or Rando'Knights?
Idle Mastermind ships an update every 6 weeks, and Rando'Knights every 5 days. Most recently, Idle Mastermind was updated on October 22, 2026 and Rando'Knights on October 16, 2026.

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