Idle Mastermind

Contains adsIn-app purchases
4.3
3.71K reviews
100K+
Downloads
Content rating
Rated for 7+
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About this game

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.

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.
Updated on
21 May 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
3.44K reviews
Gandolf112
11 February 2025
Great game, one of my favorites from this developer. Realy all three games are bangers, especially necromerger. I really like the time management on this one. My only complaint is that I think the heroes have too much health late game. After a certain amount of time, they don't die a lot, and it takes a very long time to kill them. But other than that, it's super fun.
2 people found this review helpful
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Alex Young
6 March 2025
Really fun Management game, I looked up grumpy rhino games after playing necromerger and idle apocalypse, because I just really liked their style and I was not disappointed with this one. Really fun idle management game in their classic pixel art style, once you get used to how everything works you won't put it down, check it out. Microtransaction options are actually rather fair and honest, not necessary to progression or enjoyment. The only thing i really recommend buying is the no ads option.
8 people found this review helpful
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Russell Dupont
5 January 2025
Fairly fun and interactive for a rogue like idle game. You can play as three different characters who each have a varying level of user interactivity to excel, the ads aren't intrusive or even necessary, they just help you progress, and there isn't really a paywall because you can save resources over time and games to purchase upgrades and henchman to help you, and upgrades from other characters previously played will help your current game. Highly suggest.
5 people found this review helpful
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What's new

+ New skins for Ms DOS, Sharktooth, Slug, Hax and Freedom Eagle, all available from the Mutation Stone shop.
+ Technical improvements and bug fixes.
+ Improved frame rate on certain devices.