The nuclear idle tycoon simulator is back — and it's free.

Build your own power company from the ground up. Manage heat, optimize production, and grow a massive energy empire. In Reactor 2, you don't just construct power plants — you power an entire evolving city.

Master the system, discover your best strategy, and scale your profits to become a true industrial billionaire.

BUILD, POWER, AND EXPAND
Start small with basic wind turbines and grow into a high-efficiency nuclear power network.
Your mission is simple — supply energy to the city. Your challenge? Control the heat.
• Produce heat with diverse power sources
• Convert heat into electricity for the city
• Cool your systems to avoid production shutdowns
Balance everything perfectly to achieve maximum efficiency.

RELAXED STRATEGY, NO PUNISHMENT
Reactor 2 is an idle clicker game built for thinkers, not masochists.
Your reactors never explode or reset your progress — they simply pause and cool down. This creates a no-loss, strategy-first experience where you experiment, optimize, and build at your own pace.

RESEARCH THE FUTURE
Unlock dozens of technologies and push your power empire forward.
• Renewables: Solar, Wind, Hydro, Tidal
• Advanced Tech: Nuclear, Fusion, Arc Reactors
• Sci-Fi Tier: Antimatter, Black Hole Reactors, HyperSpace Core
Every upgrade deepens your strategy and multiplies your profits.

WHY YOU'LL LOVE REACTOR 2
• Idle gameplay — earn offline, even when the app is closed
• Deep resource management, no internet required
• Expand your power grid across unique islands
• Complete quests, chapters, and story-driven challenges
• Free to play — download and start building today

NEW IN THE SEQUEL
• A living city that grows with your energy output
• Advanced quest system with chapters and rewards
• Crafted by an indie team — refined pixel art and smoother performance

Reactor 2 is the ultimate offline idle simulation game — nuclear strategy, construction management, and tycoon gameplay in one free pixelated package.
Build smarter. Optimize harder. Watch your empire grow.
Download Reactor 2 free — your nuclear tycoon journey starts today.

https://rsgapps.com/
rsg@rsgapps.com