# Idle Mastermind — Play the super villain!

> Supervillain idle simulation game with lair building and world domination. (iPhone/iPad app by Grumpy Rhino Games LTD.)

- Source: https://appshunter.io/ios/app/idle-mastermind/id1488900054 (this page in markdown: same URL + `.md`)
- Developer: [Grumpy Rhino Games LTD](https://appshunter.io/developer/895152576)
- Category: Games, Role Playing, Simulation
- Price: Free with in-app purchases
- Rating: 4.60/5 from 439 App Store ratings · 52 written reviews indexed
- Age rating: 12+
- Requires: iOS 13.0 · 282 MB
- Languages: American English
- Released: 2021-03-30
- Data updated: 2026-08-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/idle-mastermind/id1488900054/reviews.md

## What is Idle Mastermind?

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.

## Key features

- Play as 3 distinct supervillains
- Build and customize your evil lair
- Hire and manage an army of henchmen
- Raid cities for resources
- Unlock new research and skills
- Execute evil grand plans

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 200 Gems | $4.99 | one-time |
| 500 Gems | $9.99 | one-time |
| 1,250 Gems | $19.99 | one-time |
| 2,500 Gems | $29.99 | one-time |
| More Everything | $14.99 | one-time |
| Event Pack | $9.99 | one-time |
| Yara Starter Pack | $9.99 | one-time |
| LOL Starter Pack | $24.99 | one-time |
| Double Trouble | $49.99 | one-time |
| Remove Ads | $9.99 | one-time |
| Golden Throne | $14.99 | one-time |
| Seasonal Bundle | $9.99 | one-time |


## What do users think of Idle Mastermind?

Overall sentiment: mixed

**Pros**

- 🎨 Beautiful pixel art and visual design
- 😂 Witty humor and charming character dialogue
- 🎮 Engaging idle game mechanics with good progression
- ⏰ Balanced gameplay between idle and active play
- 💰 Obtainable premium currency without spending money
- 🔄 Prestige system that maintains long-term engagement
- ✨ Unique characters and creative theme
- 📱 No forced ads or non-intrusive monetization approach

**Cons**

- 🐌 Painfully slow progression and grinding
- 💸 Aggressive monetization and expensive in-app purchases
- 🔐 Content locked behind paywalls required for progression
- 🔁 Repetitive prestige mechanic feels tedious
- ⏳ Time-gated events requiring premium currency to participate
- 📉 Limited content compared to developer's other games
- 🎯 Early game bottlenecks and progression walls
- 😑 Unfunny dialogue (subjective criticism from some users)

**Commonly reported bugs**

- Game crashes when Counterfeit character robs buildings
- Random audio error producing persistent chopping/high-five sounds
- Progress randomly deleted without explanation
- Game crashes at startup after updates
- Laboratory won't produce microchips, causing soft-lock
- Ad boost offers not functioning
- Graphics rendering issues on some iPhones
- Mission quest exploit allowing infinite gem farming

**Most requested features**

- Increase progression speed by 20%
- VIP program with spending-based rewards and stat bonuses
- Skin texture overhaul with Sid's tower theme
- More content and longer event durations
- Better balance between free and paid progression paths
- Additional activities in city and base areas

## Recent user reviews (10 of 52)

All indexed reviews: https://appshunter.io/ios/app/idle-mastermind/id1488900054/reviews.md

### 5/5 — Works with no service!!!

*2026-08-03*

This game is simple and fun it has a easy afk play loop that you can pick up or put down any time. Also works without phone signal.

### 5/5 — Amazing idle game

*2026-07-13, version 1.34*

Probably have a few hundred hours in this one, love the progression and the themes

### 4/5 — Still fun, but not as amazing as their other titles

*2025-07-01*

I still like it a lot, but the gameplay loop isn’t as satisfying and strategic as Necromerger and Idle Apocalypse. Also the art and things you unlock aren’t as interesting to me since I prefer monster-type characters.

### 1/5 — I want to like it

*2025-04-09*

Like their other game NecroMerger, there’s a lot to like: the pixel graphics are great, there’s a lot of whimsy, and it’s clearly a polished game.  But it’s just painfully slow to make any progress.  And this game (unlike NecroMerger) has a ‘prestige’ mechanic, so it’s painfully slow… over and over again in the exact same way.  I’m not suggesting the game progress 1,000% faster, but maybe 20% faster.  Fundamentally both games at their current pace are just boring.

### 5/5 — Great!

*2025-02-01*

One of my favorite mobile games.

### 4/5 — Much better than average. Not amazing.

*2024-12-24*

Witty humor, colorful art, which is something you’d better have for an idle game, since you will be seeing it constantly. Fun game that is a little short in content and a bit high in price. You can earn all currencies without spending money, but they expect you to spend valuable corruptinite to a large extent to even play the events. In NecroMerger, this companies other, better idle game, they are included in the game. They are timed to once per week, like in this, but do not cost you rare resources to participate in. I was staggered when I saw to reparticipate in the moon laser event, it would cost almost ten dollars in corruptinite. It was not nearly fun or valuable enough for me to even consider doing again. That is a preposterous misfire clearly designed to drain money. NecroMerger has a much fairer attitude. The seasonal and normal events are fun, rewarding, and free. Here, I feel much less generosity at play. 

 Worth playing, but I would highly recommend not spending much money. You can get everything with enough time, and money invested does not give back enough for it, in my opinion. Also after a few weeks I seem to have maxed a lot of the building progression which is staggering considering how much better paced their other game is, which trickles content out over month and years.

### 2/5 — Crippled by microtransactions

*2024-10-17*

It will take you an inordinate amount of time to accumulate the resources needed to unlock the later villains needed for basic progression unless you spend way more money on the game than it’s worth.

### 4/5 — Man.

*2024-08-18*

When I got the 1 month achievement I checked if there were others of it and to all achievement hunters unless you wanna play this a whole year don’t play this other than that the games good

### 5/5 — Great game!

*2024-08-16*

Found a slight crashing issue though. I saved to buy Counterfeint early before most of the other henchmen and whenever she robbed a building, it crashed. I had to avoid the surface animations until I unlocked a crew with her, which stopped crashing. Wasn’t sure if this glitch was noticed, but it hasn’t caused any issue with the enjoyment of the game.

### 5/5 — Pretty Cool

*2024-04-04, version 1.29*

Pets pretty cool so things considered

## Frequently asked questions about Idle Mastermind

### What is Idle Mastermind?

Idle Mastermind is an idle simulation game where you play as a supervillain. You can build a secret lair, recruit henchmen, raid cities, and execute evil plans to take over the world. The game features three distinct villains, each with unique strategies and stories.

### What are the key features of Idle Mastermind?

Key features include playing as three unique supervillains, building and customizing a lair with various floors that generate resources offline, hiring and managing over 20 different henchmen with unique abilities, raiding cities for resources, and unlocking new research and skills to advance your criminal empire.

### Is Idle Mastermind free to play?

Yes, Idle Mastermind is free to play. However, it does offer in-app purchases and includes advertisements. These can be used to speed up progress or acquire cosmetic items.

### What kind of devices can I play Idle Mastermind on?

While specific compatibility details are not provided in the description, games of this nature are typically available on both iOS and Android mobile devices. You can usually find it on the Apple App Store and Google Play Store.

### Who is Idle Mastermind for?

This game is designed for players who enjoy simulation games, incremental clickers, and role-playing games. It appeals to those who like the idea of being a villain, building an empire, and progressing through strategic gameplay with a humorous tone.

## Version history (last 5 releases)

### 1.34 — 2025-11-05

+ Technical update.

### 1.33 — 2025-05-08

+ 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.

### 1.32 — 2025-05-02

+ 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.

### 1.31 — 2024-05-23

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

### 1.30 — 2024-05-17

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

## Apps similar to Idle Mastermind

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Idle Apocalypse](https://appshunter.io/ios/app/idle-apocalypse/id1394442481) | 4.6 (2,447) | Free | Games |
| [NecroMerger - Idle Merge Game](https://appshunter.io/ios/app/necromerger-idle-merge-game/id1611769159) | 4.8 (6,185) | Free | Games |
| [Idle Miner Tycoon: Gold digger](https://appshunter.io/ios/app/idle-miner-tycoon-gold-digger/id1116645064) | 4.7 (859,438) | Free | Games |
| [Gold and Goblins – Miner Games](https://appshunter.io/ios/app/gold-and-goblins-miner-games/id1529762599) | 4.4 (41,897) | Free | Games |
| [Cookies Inc. - Idle Tycoon](https://appshunter.io/ios/app/cookies-inc-idle-tycoon/id918606368) | 4.8 (6,813) | Free | Games |
| [Idle Anomaly: Alien Control](https://appshunter.io/ios/app/idle-anomaly-alien-control/id1630927796) | 4.7 (361) | Free | Games |

## More apps by Grumpy Rhino Games LTD

- [Idle Armies](https://appshunter.io/ios/app/idle-armies/id1144164707)
- [Idle Empires](https://appshunter.io/ios/app/idle-empires/id1208418418)
- [Idle Apocalypse](https://appshunter.io/ios/app/idle-apocalypse/id1394442481)
- [NecroMerger - Idle Merge Game](https://appshunter.io/ios/app/necromerger-idle-merge-game/id1611769159)

All apps by Grumpy Rhino Games LTD: https://appshunter.io/developer/895152576

## Related topics

[mastermind idle](https://appshunter.io/ios/topics/mastermind-idle) · [henchman](https://appshunter.io/ios/topics/henchman) · [idle apocalypse](https://appshunter.io/ios/topics/idle-apocalypse)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*