Reactor 2: Idle Nuclear Tycoon
Robert Grzybek Games iPhoneiPadiPod touch
Reactor 2: Idle Nuclear Tycoon is a free Games app for iPhone and iPad by Robert Grzybek. Rated 4.8/5 from 44 ratings. Requires iOS 15.0.
- Rating
- 4.8
- 44 ratings
- Price
- Free
- on the App Store
- Size
- 241 MB
- Age 4+
- Updated
- Oct 12
- 2026 · v1.1.10
Screenshots
About Reactor 2: Idle Nuclear Tycoon
Build a power empire where every tile matters. Reactor 2 expands the original idle tycoon with a living city, island progression, deeper quests, and new late-game technology. Start with a wind turbine, produce heat, turn it into electricity, and keep a growing city powered. BUILD AND OPTIMIZE Place reactors, generators, and heat sinks to create an efficient grid. Rearrange buildings as demand grows, solve bottlenecks, and balance output, cooling, space, and cost. CONTROL THE HEAT Heat drives your production chain. Convert it into electricity, cool overloaded systems, and keep the grid running. Overheated reactors pause and cool down instead of exploding, giving you room to experiment with better layouts. GROW WHILE YOU ARE AWAY Collect offline income, invest in research, and return to a city ready for its next expansion. Play in short sessions or spend time perfecting every part of your grid. RESEARCH THE FUTURE Advance from wind, solar, hydro, and tidal power to nuclear, fusion, antimatter, arc, and black hole reactors. Every tier introduces new strategic decisions—not only bigger numbers. EXPLORE AND EXPAND Restore power across unique islands, complete chapter-based quests, unlock buildings, and watch the city grow with your output. WHY PLAY REACTOR 2? • A hands-on heat-to-electricity simulation • Idle progress supported by meaningful strategy • Flexible building layouts and deep research • A living city powered by your decisions • No forced ad breaks during normal play • Regular updates from a small indie team that listens to player feedback • Refined pixel art from a small indie studio Build the grid. Master the heat. Power the city. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rsgapps.com/privacypolicy.htm
Ratings & reviews
4.8
44 ratings
What’s new
Version 1.1.10 · Updated October 12, 2026
- 2 new reactors: Precursor Pyramid and Ecto Compressor! - 4 new chapters, a new cooler and more research levels. - Expanded Time Lab upgrades with more levels and lower costs. - 7 new achievements and a leaderboard for Chronons earned from Time Jumps. - Research and building upgrade previews now include Time Lab bonuses. - Power line nodes now indicate island overheating. - Completed bonus task rewards are now collected automatically when claiming a chapter. - Optimized for iPhone Duo. - Improved build and speedup menus, plus interface and translation fixes.
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App privacy
The developer, Robert Grzybek, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: User ID, Device ID
- Usage Data: Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: User ID, Device ID
- Usage Data: Advertising Data, Product Interaction
- Purchases: Purchase History
Used for: Third-Party Advertising, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Crash Data, Performance Data
- Usage Data: Product Interaction
Used for: Analytics, App Functionality
Alternatives to Reactor 2: Idle Nuclear Tycoon
Looking for apps like Reactor 2: Idle Nuclear Tycoon? Here are 6 similar apps on the App Store. The highest rated is Lord Venture:Idle Money Empire (5.0/5), and all 6 are free to download.
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Lord Venture:Idle Money Empire
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Miners Cove: Idle Island
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Reactor 2: Idle Nuclear Tycoon | 4.8 / 5 (44 ratings) | Free | October 12, 2026 | |
| Production Empire | 1.8 / 5 (21) | Free | Jun 4, 2026 | Compare |
| Idle Last Shelter | 4.8 / 5 (102) | Free | Oct 9, 2026 | Compare |
| Idle Deepcore | 4.6 / 5 (79) | Free | Sep 6, 2026 | Compare |
| TycoonX: Business Simulator | 4.7 / 5 (35) | Free | Sep 27, 2026 | Compare |
| Lord Venture:Idle Money Empire | 5.0 / 5 (2) | Free | Sep 18, 2026 | Compare |
| Miners Cove: Idle Island | 4.8 / 5 (235) | Free | Oct 4, 2026 | Compare |