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Idle Mastermind icon
GOOGLE PLAY

Idle Mastermind

Grumpy Rhino Games · Simulation · United States store
NOT IN TOP 100 HERE
View on Google Play ↗ Instagram card App Store version →
Revenue a month, worldwide
Too small to estimate
Not enough chart or ratings data
New ratings
Tracking
Daily counts start building from today
Rating
4.6 of 5
4.1K ratings in this store
Countries it ranks in
0
was 0 on Oct 15, 2026

Revenue

Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track.

EST. REVENUE / MONTH · WORLDWIDE
Unranked
Not in a grossing chart in any country we track, so there is no rank to estimate from. Most unranked apps earn far less than charted ones, often close to nothing.
LIFETIME INSTALLS (GOOGLE)
476.8K
About 7.1K per month on average since launch
RATINGS
4.1K
AVG RATING
4.61
PRICE
Free
IN APP PURCHASES
$4.99 - $99.99 per item
CONTAINS ADS
Yes
LAST UPDATE
41d ago
RELEASED
Mar 26, 2021
CONTENT RATING
Everyone 10+

Last 29 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
0 / 29
COUNTRIES NOW
0 (was 0)
EST. REVENUE FROM CHARTS, DAILY · BOTH STORES ONLY EST
Show daily values
Sep 24, 2026not in a grossing chart
Sep 25, 2026not in a grossing chart
Sep 26, 2026not in a grossing chart
Sep 27, 2026not in a grossing chart
Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026not in a grossing chart
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026not in a grossing chart
Oct 22, 2026not in a grossing chart
Best rank Sep 24, 2026: not ranked. Now: not ranked. Days at zero are days outside every grossing chart.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
$4.99 - $99.99 per item
Google Play only shows the price range per item.
REVIEW MOMENTUM
2.1 reviews / week
  • Trendfalling
  • Recent reviews average4.2 stars
  • Recent 1 and 2 star share12%
From the latest 500 written reviews, covering 1640 days. The store only returns this many, so this is the most recent slice.
RATING BREAKDOWN
4.1K ratings
5★75%
4★17%
3★4%
2★3%
1★2%

What users want

From the latest 500 reviews on the United States Google Play, Apr 27, 2022 to Oct 1, 2026: 12% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Price and subscription13%

8 of the 1 and 2 star reviews.

★★★★★ If they would ask me on the street for money, maybe I'd give them something.
★★★★★ very very dull and repetitive even for an idle game was bored with 30 mins am guessing it's designed to make you spend you money so you don't lobotomise yourself.......
★★★★★ Biggest gripes are the fact that the events which are necessary for forward progression can not be overcome without using the in-game currency (to "win" enough to get the Evil Eye endorsement) and real money (to win…
Slow, laggy, battery13%

8 of the 1 and 2 star reviews.

★★★★★ Feels like it was designed with two purposes; drain your wallet as quickly as possible and make the whole ordeal as confusing as they can so they get your cash before you even realize what happened.
★★★★★ Didn't mind the slow pace since it's an idle game, but that paywall puts a total stop on game progress
★★★★★ The game is so slow later on, it's just become an annoying task I do once, MAYBE twice a day, just to collect my resources....
Too many ads11%

7 of the 1 and 2 star reviews.

★★★★★ I've enjoyed this groups games, but NOT their commercials.
★★★★★ Started playing ads in the background.
★★★★★ Super slow constantly asking to watch ads.
Bugs, things not working8%

5 of the 1 and 2 star reviews.

★★★★★ User interface is awful and frequently fails to proc the action for the object of interraction.
★★★★★ This one is particulately ad dependent but also buggy.
★★★★★ Rating 2 stars because I hate when games bug the players to review and give no option to not ask again.
Lost data, sync, backup8%

5 of the 1 and 2 star reviews.

★★★★★ After re-installing this game, I expected the game to pick up where it left off, since the game seems to use cloud saves… Instead, I've lost many months of progress and at least 6500 blue gems worth of upgrades.
★★★★★ Pretty good game but randomly lost like 3 weeks of progress if not more.
★★★★★ Lost half of my data after executing the grand plan 👍 11/10 would loose CoD mobile again
Crashes and freezes6%

4 of the 1 and 2 star reviews.

★★★★★ android 15 one ui 7 has caused frequent crashes.
★★★★★ Everytime you watch an ad for a "prize" the game crashes and you'll be forced to restart the game sans reward!
★★★★★ I watch the ad, and then the game force closes on me UPDATE 2: videos worked for a few days, and they're back down again
Missing features6%

4 of the 1 and 2 star reviews.

★★★★★ Even though there are different villains and some features added, I feel that something is missing.
★★★★★ Overall, this game seems to lack polish in design, art, writing, and balance compared to the others.
★★★★★ Rating 2 stars because I hate when games bug the players to review and give no option to not ask again.
Login and account problems3%

2 of the 1 and 2 star reviews.

★★★★★ There is very little to do when you log in, even for an idle.
★★★★★ The game says I'm not connected to the internet or my google play account, yet necromerger has no problem saying I'm connected.
WHAT THEY ASK FOR
  • 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. 2★, Apr 19, 2026
  • love this game i just wish you coukd purchase more things with corruptonite. 5★, Sep 24, 2025
  • I enjoy the gameplay loop and spend money on games I enjoy lol PLEASE ADD MORE MUTATION STONE SKINS!!! 5★, Jun 21, 2025
  • I wish more game companies had games this simple and fun to play. 5★, Jan 17, 2025
  • The green gem things are the most difficult to grind and you need a lot of them or spend money, it's possible to grind them via daily missions but it'll take awhile. 4★, Mar 26, 2024
  • I wish they had more games. 5★, Jul 4, 2023
  • Please make more games like this. 5★, Mar 11, 2023
  • This Is a great game with no ads unless you want to watch a ad, but we need more games like this and this is a great idea creator's so that is my opinion about this game 5★, Jan 19, 2023
WORDS THAT KEEP COMING UP IN BAD REVIEWS
real money4game seems3game sucks3other games4
WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Fun, addictive35%

141 of the 4 and 5 star reviews.

★★★★★ Fun, silly, with a lot of passion vlearly put into it, like the rest of the grumpy rhino games!
★★★★★ this is a really fun idle game.
★★★★★ fun game, no forced ads, a lot of content, and no need for an internet connection
Easy to use4%

15 of the 4 and 5 star reviews.

★★★★★ I wish more game companies had games this simple and fun to play.
★★★★★ Great fun, love GR, they make quality idle games that are funny and easy to get hooked on.
★★★★★ Very fun and easy to play without spending money if you are patient.
Worth the money3%

11 of the 4 and 5 star reviews.

★★★★★ no insane forced ads, super charming games and all enjoyable for free.
★★★★★ Everything in the game is perfectly doable offline and for free, any ads or purchases are entirely optional and simply speed along progress.
★★★★★ I now earn plenty of gems, corruptonite and hero coins daily to progress freely and I did the events for free with the gems.
Looks great2%

7 of the 4 and 5 star reviews.

★★★★★ It'd also be nice if removing ads tweaked the UI to remove mention of them, though that's admittedly a small subjective issue.
★★★★★ Not to mention how good the art looks despite working with a small space, it's gorgeous !!!
★★★★★ It is a solid idle game from the creators of Idle Apocalypse so if you played that, you'll find a lot of comfortably familiar mechanics and design elements, as well as the same free to play trappings.
Fast1%

5 of the 4 and 5 star reviews.

★★★★★ so far its progressing pretty fast, I know it'll slow down but its fun enough to keep on.
★★★★★ Worst part I lose the reward cause the auto save doesn't kick in fast enough.
★★★★★ Cute graphics, gameplay loop is wonderful, runs smooth.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, United States Google Play.

★★★★★Oct 1, 2026

👍

★★★★★Sep 12, 2026

Fun, silly, with a lot of passion vlearly put into it, like the rest of the grumpy rhino games!

★★★★★Aug 31, 2026

this is a really fun idle game. the art is cute and the story is fun. It's not to hard to play without paying for anything.

★★★★★Aug 31, 2026

great game !

★★★★★Aug 31, 2026

as good as i remember back when i first played even if it doesn't seem like much got added, only issue i have is the events feel like they last 2 days instead of 3 days

★★★★★Aug 8, 2026

fun game, no forced ads, a lot of content, and no need for an internet connection

Store screenshots

ScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshot

App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here. Shown for the App Store version (Idle Mastermind).

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title or short description.

unique5lair4henchmen4idle4evil4floors4build lair3raid city3makers idle3idle apocalypse3special floors3henchmen different3unique resource3resource management3build3hire3apocalypse3dastardly2raid2city2makers2plan2empire2resources2

What's new in 1.35

+ Large technical update.

Store 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.

See this store page in another country

Prices, ranks and reviews are per country. Revenue above is already worldwide.

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