# Idle Mastermind

> Play the super villain!

Canonical page: [https://chrome-stats.com/d/id1488900054](https://chrome-stats.com/d/id1488900054)

## Overview

- **ID:** `id1488900054`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Grumpy Rhino Games LTD
- **Category:** Simulation
- **Rating:** 4.60 / 5 (440 ratings)
- **Version:** 1.35
- **Last updated:** 2026-09-16
- **First published:** 2021-03-30
- **Size:** 286 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/idle-mastermind/id1488900054)
- **Website:** [http://www.grumpyrhinogames.com/](http://www.grumpyrhinogames.com/)
- **Privacy policy:** [https://www.grumpyrhinogames.com/privacy-policy](https://www.grumpyrhinogames.com/privacy-policy)

## Description

Idle Mastermind lets you play as three distinct supervillains—Dr DOS, Yara, and LOL—each with their own lair, floors, and evil plan. Build a criminal empire: develop a lair, hire henchmen, and raid the city above to amass resources. Enjoy the humor and banter from Grumpy Rhino as your empire grows (even when you’re away).

Features include 30 unique floors per lair, offline resource generation, and 20+ henchmen classes with different strategies and skills. Unlock research, complete events, collect skins, and join the Evil Eye Association as you pursue world domination. From the makers of Idle Apocalypse, this idle RPG blends strategy with humor for fans of simulation and incremental games.

## Rankings

- #77,165 — Overall

## Review summary

Idle Mastermind is praised for its charming art, witty writing, and strong idle/active balance with a rewarding prestige system, plus optional ads and regular updates. However, players repeatedly cite a very slow grind and time-gating, heavy monetization that can block progress, and occasional bugs or crashes that affect playability. Overall, solid presentation and mechanics are marred by pacing and monetization concerns.

### Pros

- Charming art style with witty humor and colorful pixel graphics.
- Strong idle/active gameplay balance with deep base mechanics and a rewarding prestige/reset system.
- Progression can be pursued without spending money; ads are optional and monetization can be fair.
- Regular events and updates keep the game fresh and varied.
- Developers are responsive with ongoing quality-of-life updates.

### Cons

- Progression is painfully slow due to grind and time-gating, especially for non-payers.
- Monetization concerns: high-priced IAPs, paywalls, and events that require purchases to advance.
- Endgame feels repetitive or lacks depth, with progression potentially stalling.
- Bugs and stability issues like startup crashes and occasional audio glitches.

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- [Villains Corp. | The Secret Villainy Laboratory](https://chrome-stats.com/d/id1027514372) — 4.50 / 5
- [Idle Mafia: Empire Simulator](https://chrome-stats.com/d/id1479343175) — 3.80 / 5
- [Idle Cult Empire - Evil Tycoon](https://chrome-stats.com/d/id6453469520) — 4.60 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1488900054)