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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.
★★★★☆Nep Lyndens· Jul 18, 2025
Excellent idle game, I'm a pretty big fan of the Grumpy Rhino games! Lowered to a 4-star review only because the game seems to be freezing a lot more frequently lately, and it can be fixed by restarting the app, but unfortunately any progress made before the freeze tends to reset itself upon re-opening. Otherwise, very fun to check in on- I love catching conversations, and I appreciate that the ads are not forced on you, and they make it worthwhile to make the choice to watch them.
★★☆☆☆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.
★★☆☆☆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.
★☆☆☆☆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).
Google Play Rankings for Idle Mastermind
This app is not ranked
Technologies used by Idle Mastermind
Idle Mastermind is requesting 12 permissions and is using 0 libraries.
Permissions
Network communication
view network connections,
full network access,
Google Play billing service,
Google Play license check
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
