# GreyOut: Lights Off

> Puzzle

Canonical page: [https://chrome-stats.com/d/id6768617894](https://chrome-stats.com/d/id6768617894)

## Overview

- **ID:** `id6768617894`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Haktan Kocyigit
- **Category:** Puzzle
- **Version:** 1.0.2
- **Last updated:** 2026-05-28
- **First published:** 2026-05-18
- **Size:** 1.32 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/greyout-lights-off/id6768617894)
- **Privacy policy:** [https://hacktan.github.io/GreyOut/privacy/](https://hacktan.github.io/GreyOut/privacy/)

## Description

Grey Out is a minimalist logic puzzle that will test your mind in the most satisfying way possible.

HOW TO PLAY
Each level presents a 5×5 grid of glowing cells. Tap any cell and it — along with its four neighbors — flips state. Your goal: turn every cell grey. Simple rules. Endless depth.

24 HANDCRAFTED LEVELS
Progress through four chapters of increasing challenge:
• Beginner — Learn the core mechanic with elegant one- and two-move solutions
• Intermediate — Four- and five-tap puzzles that introduce spatial thinking
• Advanced — Up to nine simultaneous effects demanding careful planning
• Expert — Twelve-tap masterpieces where one wrong move unravels everything

DAILY CHALLENGE
A brand-new puzzle every day, seeded by the date so everyone plays the same one. Build your streak and see how far you can go.

BUILT-IN HINT SYSTEM
Stuck? The hint system uses an exact mathematical solver — Gaussian elimination over GF(2) — to find the next optimal move. No guessing, no randomness: provably correct guidance every time.

EARN UP TO 3 STARS PER LEVEL
- 3 stars: Solve at or below par
- 2 stars: Within 60% above par
- 1 star: Any solution

POLISH THROUGHOUT
• Procedurally synthesized sound — no audio files, every tap sound is computed live
• Haptic feedback tuned to match the rhythm of each action
• Animated wave effect ripples across affected cells on every tap
• Confetti celebration when you crack a tough puzzle
• Full VoiceOver support

NO ACCOUNTS. NO ADS. NO TRACKING.
Grey Out stores your progress locally on your device. Nothing is collected, nothing is shared.

## Rankings

- #1,086,710 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6768617894)