Idle Mastermind vs bARTballs
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
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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.
bARTballs
A vibrant and engaging ball game where players collect balls to earn points while evading enemies. Includes a tutorial for practice and offers a fun, colorful experience.
- Ball collection for scoring
- Enemy avoidance gameplay
- In-game tutorial
- Colorful graphics
- Fun and engaging experience
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bARTballs a pretty cool, colourful ball game with a lot of fun You have to gather balls to get score and try to avoid the enemies if you can. For game playing practice check the tutorial section! Have fun & enjoy! :)
Screenshots
Verdict
The clearest difference is price: Idle Mastermind at Free against bARTballs's $2.99. Idle Mastermind also leads on ratings volume (440 vs 2). bARTballs's advantage is in-app purchases (none vs 12) and ads (none vs shown). On device support and iOS requirement 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
Idle Mastermind is free to download; bARTballs costs $2.99 up front. Idle Mastermind sells 12 one-off in-app purchases. bARTballs asks for nothing beyond the download.
bARTballs holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Idle Mastermind has 440 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of Idle Mastermind's written reviews are positive against 100% of bARTballs's.
Idle Mastermind ships an update every 6 weeks, bARTballs every 3 days. The most recent releases landed on September 29, 2026 and June 28, 2026 respectively.
| Parameter | Idle Mastermind | bARTballs |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.6 (440 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 67.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 440 — better | 2 |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 286 MB | 220 MB |
| Age rating | 12+ | 4+ |
| Developer | Grumpy Rhino Games LTD | Istvan Bartucz |
Customer experience
Idle Mastermind
bARTballs
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
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- 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
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- Additional activities in city and base areas
bARTballs
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Idle Mastermind
- 200 Gems$4.99
- 500 Gems$9.99
- Event Pack$9.99
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- 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
bARTballs
No in-app purchases
Questions
Is Idle Mastermind free?
Is bARTballs free?
Which has better reviews, Idle Mastermind or bARTballs?
Do Idle Mastermind or bARTballs have ads?
Which is updated more often, Idle Mastermind or bARTballs?
Other comparisons
