Idle Mastermind

Contains adsIn-app purchases
4.09K reviews
Content rating
PEGI 7
100K+
Downloads
Content rating
PEGI 7
Mild Violence
In-Game Purchases
Learn more
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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.
Ever wanted to be the villain? Build a lair? Hire henchmen? Take over the world?
Updated on
Sep 11, 2026

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

3.78K reviews
Darren McCreadie
September 6, 2025
I tried this game because I liked their others, but I didn't find this one nearly as fun or engaging, and it has some really unsatisfying game design choices. There is very little to do when you log in, even for an idle. They also lock players out of claiming event rewards if the event ends before you claim them. Absolutely infuriating since you have to spend hard earned currency to get anywhere in them.
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Lewis ???
July 23, 2023
This game would be an EASY 5 star game if two things were fixed. 1: locking rooms behind the skill tree which you can only upgrade by the traditional "idol game reset" but VERY SLOWLY due to not being able to upgrade further without said rooms is kinda dumb. 2: unlocking new Masterminds. I was told I could unlock a new one after my first reset, but that was a lie because I needed ONE THOUSAND of a material that is so hard and tedious to get. I do love the game, but I think it could be better.
31 people found this review helpful
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Isaac Hyde
March 22, 2023
A funny game, but it's humour is the main part, the gameplay is pretty boring, but the word "idle" in the title makes that obvious. This game has some wasted potential, it would've been fun going around fighting stereotypical heroes as a stereotypical villain while also making fun of them. Overall, a funny game, but actually playing it is boring.
1 person found this review helpful
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What’s new

+ Large technical update.
Content rating
PEGI 7
Mild Violence
In-Game Purchases
Learn more

App support

About the developer
GRUMPY RHINO GAMES LIMITED
support@grumpyrhino.com
Unit 405 Exmouth House, 3-11 Pine Street LONDON EC1R 0JH United Kingdom
+44 20 7953 2233

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