Idle Mastermind vs Idle Spaceweaver
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle Mastermind
Embrace your inner supervillain in this idle simulation game. Build a secret lair, recruit henchmen, and execute dastardly plans to take over the world. Choose from three unique villains, each with their own strategies and grand schemes.
- 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
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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.
Idle Spaceweaver
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A Space-Themed Idle Incremental game. No Energy, No Premium Currency, No Ads, No Pay-to-Win and No Internet Required. Master 18 skills, command a growing fleet and build your galactic legacy at your own pace - a complete idle space game. Developed with a simple vision: build the kind of idle game that respects its players. WHY IT'S DIFFERENT • All 18 skills level to 99 - deep, earned progression • 25 unique planets, each with its own resources, markets and secrets • Ships earn their own XP, then scout out new worlds to grow your fleet • Hundreds of crew recruits, each with a portrait, personality and story • Combat with no death penalty - your ship retreats, recovers, tries again • Up to 24 hours of offline progress with a full "While You Were Away" report • 280+ quests, 100+ achievements, collections and an endgame prestige system • Plays entirely offline - optional cloud backup, home-screen widgets • No ads, no energy, no gems, no loot boxes, no paywalls A UNIVERSE OF SKILLS Chop, mine, fish, hunt and gather across alien worlds. Cook, craft, build and research your way to advanced technology. From Woodcutting and Mining to Outfitting, Astronomy and Linguistics, your combined level unlocks new systems deep into the late game. A FLEET AND A CREW Send expeditions across the galaxy, work the recruitment board and take your pick from hundreds of unique recruits. Assign them to roles and watch your whole operation speed up. OPTIONAL MINI-GAMES Chart constellations, decode alien signals, cultivate alien flora and restore ruined worlds. Play them for fun - the core game never requires them. A GALAXY WITH A STORY A motion-comic opening cinematic, an ever-growing lore Codex, rare cosmic events and a quiet sense that something out there is still looking for you. A GENUINELY FAIR GAME The only purchases are one optional one-off upgrade (full-speed offline earnings) and a tip jar to support development. No gameplay or content is ever locked behind payment. Whether you have five minutes or five hours, there's always meaningful progress to make. Your ship is waiting, Explorer.
Screenshots
Verdict
The clearest difference is ads: Idle Spaceweaver at none against Idle Mastermind's shown. Idle Spaceweaver also leads on update cadence (weekly vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Idle Mastermind sells 12 one-off in-app purchases and Idle Spaceweaver sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Idle Mastermind ships an update every 6 weeks, Idle Spaceweaver weekly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Idle Mastermind | Idle Spaceweaver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (440 ratings) — better | — |
| Positive reviews | 67.9% of reviews | — |
| Number of ratings | 440 — better | — |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 286 MB | 130 MB |
| Age rating | 12+ | 12+ |
| Developer | Grumpy Rhino Games LTD | Timothy Welch |
Bugs and requests
Idle Mastermind
Reported bugs
8 issues- 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
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- Ad boost offers not functioning
- Graphics rendering issues on some iPhones
- Mission quest exploit allowing infinite gem farming
Requested features
6 requests- 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
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- Additional activities in city and base areas
Idle Spaceweaver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Idle Mastermind
- 200 Gems$4.99
- 500 Gems$9.99
- Event Pack$9.99
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- Yara Starter Pack$9.99
- Remove Ads$9.99
- Seasonal Bundle$9.99
- More Everything$14.99
- Golden Throne$14.99
- 1,250 Gems$19.99
- LOL Starter Pack$24.99
- 2,500 Gems$29.99
- Double Trouble$49.99
Idle Spaceweaver
- Support Development$0.99
- Faster Offline Progress$4.99
Questions
Is Idle Mastermind free?
Is Idle Spaceweaver free?
Do Idle Mastermind or Idle Spaceweaver have ads?
Which is updated more often, Idle Mastermind or Idle Spaceweaver?
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