PUZZLE SPARK

Puzzle Spark — Lights Out puzzles

Turn every light off. Each tap changes a cell and its edge-sharing neighbors. A simple rule, with room to think.

Preview build · Store release in preparation

Android release in preparation. No public iOS release date has been announced.

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3 × 3 / LIGHTS OUT

One rule. A whole journey.

240 unique puzzles, arranged into 24 tiers of 10. Start with a 3×3 grid, progress to 4×4 and 5×5, and build confidence as the shortest solution grows from 1–2 to 13 moves.

Help, on your terms.

Two free daily hints, saved hint credits and optional rewarded test ads in development builds. Rewards are granted only after the ad SDK confirms completion; ad duration varies. You can always continue solving without watching.

Five languages. One spark.

English by default, with Vietnamese, Spanish, Portuguese and Japanese available in Settings. Progress and language choices are saved on your device.

How to play

01 • The goal

Turn off every light. Tapping a cell toggles that cell and its neighbors above, below, left and right. Diagonal neighbors do not change.

02 • Look before you tap

Tapping the same cell twice restores its previous state. The final board depends on which cells are tapped an odd number of times, not the order. Every level has a verified solution.

03 • Stars and hints

The target is the minimum number of moves. Rating score = taps + undos + 2 × hints. Meet the target for 3 stars; up to 3 extra points earns 2 stars; otherwise 1. You get 2 free hints per day without rollover. Completing an optional ad grants 3 saved hints only when the SDK confirms the reward; ad duration varies. Completing the daily puzzle awards 1 hint on streak days 1–2, 2 on days 3–6 and 3 from day 7. Rewards are once per date; a broken streak restarts at day 1, but earned credits stay. Achievement sharing uses the system share sheet and never posts automatically. There is no time limit. Replay to improve your best result.

04 • Save and continue

Moves are saved when you tap, use hints or leave a puzzle. Choose Continue to resume. Open the level list using the grid button. Complete a level to unlock the next; unlocked levels can be replayed.

05 • Daily and free play

A daily 4 × 4 puzzle follows the device date. Complete it to record the day and keep your streak. Free play creates a new board at your chosen size and does not affect journey progress. Progress is saved on this device only.

Stars and streaks are personal game records, not money or prizes.

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