ONE SMART MOVE. A WHOLE CITY RESPONDS.

Welcome to System Reboot. Rotate 2×2 groups of glass cookies, match colors and set off cascading combos as you travel through a mysterious futuristic city. Easy to learn. Plenty to master.

FIVE DISTRICTS. FIVE GUARDIANS.
From mist-covered towers to fractured underground spaces, each district brings its own atmosphere, special cookies and boss. Break ice, defuse bombs and adapt when attacks change the board.

SOMEONE IS ON THE LINE.
Meet Nik: an engineer with a terminal, a locked door and an urgent need for your help. Your moves open the way. Your replies shape the conversation. Discover what happened at Aster—and decide how the story ends.

PLAY & COMPETE
• Time Trial: 120 seconds. Keep the chains coming.
• Circuit: an endless run through changing biomes.
• Rush: build combos and push the multiplier.
• Daily Shift: a new shared challenge, 30 moves to make your mark.
• Laboratory: experiment with your own rules, without a clock.

Sign in to Google Play Games to compare Time Trial, Circuit and Rush scores with friends and the global leaderboards. No account is required for the story or local play.

GLASS, LIGHT AND MOMENTUM
Explore animated 3D environments, reactive bosses and satisfying shattering combos. Play in English, Russian or Spanish, with adjustable visual, sound and accessibility settings.

FREE TO START
Play the first story chapter and Time Trial free. The free story includes ad breaks; continuing after a loss requires a rewarded video. Watch a rewarded ad for one Daily Shift attempt. A one-time Full Game purchase unlocks all five chapters and every Play & Compete mode, and removes ads. No subscription.

Internet access is required for ads, purchases and online rankings. Availability may vary by region and connection.