Reactor Idle Tycoon vs Critical
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Reactor Idle Tycoon
Build and manage your own energy empire, from wind turbines to advanced reactors. Generate electricity, manage heat, and sell power for profit in this engaging idle strategy game. Unlock new maps and technologies to maximize your earnings.
- Build various power generation facilities
- Manage heat and stability of reactors
- Idle mechanic for offline earnings
- Unlockable maps and upgrades
- Complex strategy with easy learning curve
- Research system for advancements
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Do you want to create your own reactor and generate energy for an entire country? Or maybe you want to harness the electric power and sell it for a profit? Reactor allows you to do that and so much more in one of the most intense and one of a kind strategy games that you have ever played. The premise in Reactor is very simple, you have to create power plants and generate as much electricity and heat as possible all while keeping everything under control and converting it into a lot of money. You will have to start off easy, with the help of small wind turbines that will generate a little electricity, enough to get your business going. Then you have to focus on getting stuff like offices and more turbines, solar panels, generators, coal burners, and in the end you will have the ability to create your own reactor, be it a nuclear, thermonuclear or fusion reactor, something that is very important to keep an eye on. Reactors are by far the best if you want a great return on investment but they are also the less stable and you have to manage heat as they can easily become unstable. With more than 10 maps to unlock and play, you will always have your hands full as you will try to figure out the best way to make insane profits and obtain a stellar result. You can play it safe and run a business that brings less but stable amounts of money, or you can check out alternative methods that are riskier but with a better return on investment. Reactor is an astounding idle game, one that manages to bring in front extraordinary gameplay moments and stunning opportunities. It’s very fun to play and you can easily use it as an idle game, because resource production will take place even as you go away, which is even more exciting. In Reactor you have all the power in your hands and it all comes down to you to make the right choice and take this one of a kind gameplay mechanic to new heights. With incredibly fun gameplay, nice mechanics and interesting choices, Reactor is the ultimate game that you want to play. A sheer combination of strategy, idle gaming and perfect unlock system, Reactor will help you spend your time wisely with amazing moments and a stellar outcome. Features: • Multiple buildings to choose from • A complex game that’s easy to learn and hard to master • Idling mechanic that allows you to earn resources even if you are offline • You have the first map for free, the others need to be unlocked • Multiple upgrades to choose from • Interesting gameplay mechanics that you have to keep an eye on at all costs • Stellar research system
Critical
Manage a reactor to prevent it from becoming critical by delivering water. Earn money over time to unlock permanent upgrades and improve your survival capabilities. Invest wisely to extend your runs and uncover secrets.
- Reactor management
- Incremental income generation
- Permanent upgrades
- Research and secrets
- Survival gameplay
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Stop the reactor from going critical by delivering water. Robots are expensive though, so we use cheap expendable personnel instead. Money earned ramps up incrementally the longer you last. Survive as long as possible to maximize your income! Spend your hard earned cash to unlock permanent upgrades. Invest wisely to make each new run longer than the last. Tons of upgrades to buy, research to be done, and secrets to uncover. Give it a try! The longer you can keep the reactor from exploding, the more money you’ll make. Start small and watch your income grow exponentially as you survive longer and longer. Delay the inevitable cataclysm as long as possible and watch your cashflow go through the roof.
Screenshots
Verdict
The clearest difference is review sentiment: Reactor Idle Tycoon at 78% against Critical's 18%. Reactor Idle Tycoon also leads on rating (4.7 vs 4.4) and ratings volume (7.6K vs 147). Critical's advantage is update cadence (fortnightly vs every 4 months). On price, ads, in-app purchases and monetization model 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. Reactor Idle Tycoon sells 10 one-off in-app purchases and Critical sells 17 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Reactor Idle Tycoon holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Reactor Idle Tycoon has 7.6K ratings behind it against 147, so its average is the more settled of the two. Written reviews point the same way: 78% of Reactor Idle Tycoon's written reviews are positive against 18% of Critical's.
Reactor Idle Tycoon ships an update every 4 months, Critical fortnightly. The most recent releases landed on October 30, 2026 and October 21, 2026 respectively.
| Parameter | Reactor Idle Tycoon | Critical |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (7.6K ratings) — better | 4.4 (147 ratings) |
| Positive reviews | 77.8% of reviews — better | 18.2% of reviews |
| Number of ratings | 7.6K — better | 147 |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 131 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Grzybek | WaffleStack Studio LLC |
Customer experience
Reactor Idle Tycoon
Critical
Bugs and requests
Reactor Idle Tycoon
Reported bugs
3 issues- Money resets to zero
- Research points not properly calculated
- Inconsistent ad rewards
Requested features
4 requests- More content and upgrades
- Ability to upgrade existing buildings
- Faster removal of trees and mountains
- Offline progress improvements
Critical
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Reactor Idle Tycoon
- Unlock Area$1.99
- Unlock Area 1$2.99
- Unlock Area 2$2.99
Show 7 moreShow fewer
- 20x Tools$2.99
- Unlock Area 3$3.99
- Buy Research Points$3.99
- Unlock Area 7$5.99
- 50x Tools$5.99
- Unlock Special Map!$9.99
- Remove banner and get 100% bonus!$9.99
Critical
- 100 Gems$2.99
- 100 Gems$4.99
- Remove Ads$7.99
Show 14 moreShow fewer
- 225 Gems$7.99
- Starter Pack$9.99
- Remove All Ads$9.99
- 225 Gems$9.99
- 500 Gems$9.99
- Pro Pack$9.99
- Pro Pack$14.99
- New Player Sale$14.99
- 500 Gems$14.99
- 1400 Gems$19.99
- 800 Gems$19.99
- 1400 Gems$29.99
- 3000 Gems$29.99
- 3000 Gems$39.99
Questions
Is Reactor Idle Tycoon free?
Is Critical free?
Which has better reviews, Reactor Idle Tycoon or Critical?
Do Reactor Idle Tycoon or Critical have ads?
Which is updated more often, Reactor Idle Tycoon or Critical?
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