Reactor

Reactor is an idle clicker wrapped in neon, built on the genre's addictive loop: tap the core to charge it by hand at first, spend that charge on modules that then produce energy automatically every second, and watch the whole thing snowball while you barely touch it. The counterintuitive rule that separates idle-game veterans from beginners is to always buy the cheapest module you can afford rather than hoarding for one shiny tier — steady compounding wins — and to check back after a break, since the reactor keeps earning while the tab is closed and offline pay often buys the next upgrade outright. When growth finally stalls, Reboot wipes your modules but grants a permanent production multiplier that stacks with every reboot before it, so the long game is timing each reset to launch you faster than the last. Offline earnings cap at eight hours with a welcome-back summary waiting. Everything saves locally in your browser, your best lifetime energy can climb the weekly board, and it costs nothing to start humming along.