Idle Mastermind is a simulation app developed by Grumpy Rhino Games.
Download Statistics
Idle Mastermind has been downloaded 480 thousand times. In the last 30 days, the app was downloaded 580 times.
User Ratings
Idle Mastermind is rated 4.61 out of 5 stars. The rating is based on 3.8 thousand ratings.
App Information
Idle Mastermind is FREE to download. The APK download size is 88.29 MB. The latest version available is 1.34. The last update was on October 29, 2025.
Technical Requirements
Idle Mastermind requires Android 6.0+ or higher. The app has a content rating of High Maturity. The app has been available on Google Play March 2021.
Description
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.
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Really fun Management game, I looked up grumpy rhino games after playing necromancer 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.
★★★★☆Raiden Lamothe· Feb 19, 2026
very, very fun, amazing, little ads, not p2w, and overall amazing game. However, I do think it's a little rebirth heavy, and a bit repetitive at times often leading to stand stills. The art style is amazing, and the developers are amazing (I recommend their other game "necromancer" it's their latest and best project") but I think this game has a little to go, but sadly I don't think it will get those finishes, since grumpy rhino has moved on. Atleast we have it right now, still super fun!
★★☆☆☆Yue Arifureta· Apr 19, 2026
I understand this was supposed to be a fun game, but I find it boring. Even though there are different villains and some features added, I feel that something is missing. All day, I just rotate in the city, and that's kind of boring. I wish something could be different, like a 2D story of a villain attacking the city—something cinematic, with a group of bad guys attacking the city or a single villain. Each cinematic story could have different actions and endings.
★☆☆☆☆Nareonith· Oct 28, 2025
It's a time waster and a poorly thought out one as well. The "end game" prestige system is just laughable compared to the developer's other games. Boy, it suture is fun starting over from the beginning and redoing everything but SLOWER(like... way slower. 100 times slower).
★★☆☆☆Darren McCreadie· Sep 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.
Google Play Rankings for Idle Mastermind
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Technologies used by Idle Mastermind
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