Light Up

Light Up Tap a cell and a light switches on, shining up, down, left and right until a wall stops it. Fill every dark cell — but never let two lights see each other. Numbered walls tell you exactly how many lights may touch them. WHAT YOU GET - Campaign mode - Sprint mode - 1000 boards — every one falls to pure deduction - Never a guess. If you are stuck, there is always a next forced move - The first four boards teach the rules one at a time, on the board - Two lights in the same line turn red immediately - Long-press to mark a cell you have ruled out - Unlimited free undo — the Campaign has no timer and no lives - Plays offline, no account needed Sprint mode adds a three-minute clock if you want one — and builds a fresh board every round, so no two runs are the same. Campaign never uses a clock. Free to play with ads. No purchases required.