Idle Mastermind1.35
Publisher Description
Ever wanted to be the villain? Build a lair? Hire henchmen? Take over the world?
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.
About Idle Mastermind
The company that develops Idle Mastermind is Grumpy Rhino Games. The latest version released by its developer is 1.35.
To install Idle Mastermind on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-09-11 and was downloaded 5 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Idle Mastermind as malware as malware if the download link to com.grumpyrhinogames.idlemastermind is broken.
How to install Idle Mastermind on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Idle Mastermind is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Idle Mastermind will be shown. Click on Accept to continue the process.
- Idle Mastermind will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 1.35
posted on 2026-09-11
+ Large technical update.
version 1.34
posted on 2025-10-29
+ Technical update.
version 1.33
posted on 2025-05-06
+ Added Evil Eye skins for Big Shot, Maw, Influenza and Bullion.
+ Hax's default trait has been improved.
+ Hocus's Evil Eye skin has had its name and cost changed.
+ Technical updates.
+ More bug fixes.
version 1.32
posted on 2025-04-29
+ Added Evil Eye skins for Big Shot, Maw, Influenza and Bullion.
+ Hax's default trait has been improved.
+ Hocus's Evil Eye skin has had its name and cost changed.
+ Technical updates.
+ Bug fixes.
version 1.30
posted on 2024-05-21
+ New skins for Ms DOS, Sharktooth, Slug, Hax and Freedom Eagle, all available from the Mutation Stone shop.
+ Technical improvements and bug fixes.
version 1.31
posted on 2024-05-21
+ 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.
version 1.29
posted on 2023-05-19
+ 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.
version 1.28
posted on 2022-11-18
+ The Snowfall event is back.
- Complete tasks to earn Candy Canes to purchase seasonal skins.
- 8 skins including "Cold Sharp" skin for Card Sharp (new for this year).
- A new "Igloo" lair theme. This theme is shared by all 3 villains and can be purchased permanently. Once purchased it grants +15% Producer Speed.
- Unlock the "Snowed Under" city theme permanently.
- The event finishes at midnight on December 26th.
+ Golden Throne and Auction Room now change with lair skin.
+ Some bug fixes.
version 1.20
posted on 2022-04-27
+ Evil Eye skill tree has been completed. It now has 50 skills and a whole load of new content (including a new henchman).
+ Note some achievements and costs for the normal supervillain skill trees have been changed as part of this update.
+ Bug fixes.
version 1.12
posted on 2022-02-23
+ Added “The Time Before Crime” theme. This prehistoric city theme comes with a dinosaur crane, lava lakes and a primeval train. As well as -3% Superhero Max Health boost.
+ Interrogation Room finally has dialogue (lots of Yara-specific dialogue)
+ The Golden Throne, Drone Bays and Mutators will show exclamation points when they should be interacted with.
+ The Golden Throne’s bonus will end if you destroy the Golden Throne.
+ Fixed some typos.
+ Improved advert availability.
