Idle Mastermind 12+

Play the super villain‪!‬

Grumpy Rhino Games LTD

Designed for iPad

    • 4.7 • 334 Ratings
    • Free
    • Offers In-App Purchases



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.

What’s New

Version 1.29

+ Added the “After the Grand Plan” City Theme. This City Theme is a wasteland set after the supervillains have executed their plans. You can buy it from the shop and it gives a +300% Infamy bonus.
+ Reduced the cost of replaying a random event for Evil Eye currency from 5k Corruptonite to 3k.
+ Other tweaks and bug fixes.

Ratings and Reviews

4.7 out of 5
334 Ratings

334 Ratings

Soumasomatic ,

My favorite Idle Game

This game is wonderful for a variety of reasons. Witty dialogue, unique characters, a fun aesthetic, etc. But the reason I call it my favorite idle game is because of the base mechanics. Most idle games to me start fun, get boring after a certain point, pick up again in the late game, and then taper out. This game gets rid of the middle trough, so I already feel like I’m in the late game, and even after playing for 8 months the fun hasn’t tapered off. By having resets that take you to other characters, you get to stay in the fun early game period while still making progress. Additionally, I haven’t spent a cent on this game. Yes, I watch adds sometimes but the game makes that entirely optional and the AdMan system makes sure I don’t overload myself on ads either. I can check in on the game throughout the day, and probably put in an hour or two a day, which is exactly what I want from an idle game. Cannot recommend enough

BlueInklingBoi64 ,

I encountered an audio error, please fix \/

So the game is fine and i love it to bits, but there’s an audio error that happens randomly and consistently for long periods of time when I play. And turning SFX and music off doesn’t fix it. It sounds like someone high-fiving or chopping a wa-Poosh or ca-chunk. It doesn’t stop until I close the app and turn off my phone. It’s annoying and I can’t get it to stop. It persists after closing the game and opening other things, and it’s only happening with this game. Please fix it, I love this game and I wanna keep playing. Thank you.

Mklmcdonald ,

Brilliant idle game

GrumpyRhino makes the best idle/resource management games and this one is no exception. Progressing in the game is fun and includes ways to play when idle and while active. Offers I n game events as well as seasonal events, and the prestige system offers great rewards and feels rewarding. Grumpy is also known for consistent quality content updates as well as well thought out quality of life updates. Try this game and Idle Apocalypse.

App Privacy

The developer, Grumpy Rhino Games LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


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