Idle Mastermind
Grumpy Rhino Games LTD Games iPhoneiPadiPod touch
Idle Mastermind is a free Games app for iPhone and iPad by Grumpy Rhino Games LTD. Rated 4.6/5 from 440 ratings. Requires iOS 15.0.
- Rating
- 4.6
- 440 ratings
- Price
- Free
- on the App Store
- Size
- 286 MB
- Age 12+
- Updated
- Sep 16
- 2026 · v1.35
Screenshots
About Idle Mastermind
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.
Ratings & reviews
4.6
440 ratings
What’s new
Version 1.35 · Updated September 16, 2026
+ Large technical update.
App privacy
The developer, Grumpy Rhino Games LTD, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: User ID, Device ID
- Usage Data: Product Interaction, Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID, User ID
- Usage Data: Product Interaction, Advertising Data
Used for: Third-Party Advertising, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Crash Data, Performance Data
Used for: Analytics, App Functionality
Alternatives to Idle Mastermind
Looking for apps like Idle Mastermind? Here are 6 similar apps on the App Store. The highest rated is Idle Obelisk Miner (4.9/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Idle Mastermind | 4.6 / 5 (440 ratings) | Free | September 16, 2026 | |
| Idle Obelisk Miner | 4.9 / 5 (3,578) | Free | Sep 30, 2026 | Compare |
| Rando'Knights | 4.5 / 5 (30) | Free | Jul 22, 2026 | Compare |
| Doomsday Clicker | 4.6 / 5 (3,155) | Free | Jun 9, 2026 | Compare |
| Necromancer: Frost and Flame | 4.6 / 5 (311) | Free | Aug 19, 2026 | Compare |
| Space Colonizers Idle Clicker | 4.7 / 5 (2,113) | Free | Oct 22, 2026 | Compare |
| Idle Tower Builder: Miner City | 4.8 / 5 (416) | Free | Sep 12, 2026 | Compare |
Compare Idle Mastermind with the top alternatives: ratings, updates, ASO score and keyword gaps →