Lucerna: Akari Puzzle

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Bu oʻyin haqida

Lucerna is an Akari puzzle — also published as Light Up — for players who like unhurried, honest logic.

You place lamps in the open cells. A lamp lights its own cell and everything in the four directions until a wall stops it. No lamp may light another lamp, every open cell has to end up lit, and a numbered wall has exactly that many lamps beside it. Two rules pulling against each other, and the numbers saying where the balance is.

NEVER A GUESS
Every step can be reasoned out. Each board is checked by a solver that only uses techniques a person can follow and explain. On the hardest boards that sometimes means thinking one move ahead: try the opposite in a cell, and a few moves later the puzzle no longer works out. The hint button uses that same solver, so a hint is always a move you could have found yourself, and it tells you which idea it used.

LEARN IT BY PLAYING IT
The rules fit in four lines and the seeing takes longer. The walkthrough hands you real positions and asks for the one cell that follows, then shows you why. No board in it was made up — each is a genuine puzzle stopped at the moment the idea it teaches becomes the forced next move.

THREE WAYS TO PLAY, ALL OFFLINE
• 12 campaign chapters, from gentle openings to genuine work
• A daily puzzle, the same one for every player worldwide, with a gentle Monday and a demanding Sunday
• Endless mode in four difficulties: Easy, Medium, Hard, Expert

MEASURED IN MONTHS, NOT STREAKS
Fill in every day of a calendar month and the month earns its own trophy. There is no streak to lose: a day you missed can still be filled in from the archive, so a week away from the game costs you nothing.

BUILT TO BE PLEASANT
• Warm Material 3 design, light and dark, following your system colours
• Completely offline — no account, no sign-in, no network needed
• One tap places a lamp — no dragging, no typing
• No countdowns you did not ask for and no interruptions

27 languages supported. No account required. Pure logic.
Place lamps until every cell is lit. Pure logic — never guessing.
Oxirgi yangilanish
28-okt, 2026

Maʼlumotlar xavfsizligi

Xavfsizlik — dastur ishlab chiquvchilar maʼlumotlaringizni qanday jamlashi va ulashishini tushunishdan boshlanadi. Maʼlumotlar maxfiyligi va xavfsizlik amaliyotlari ilovadan foydalanish, hudud va yoshga qarab farq qilishi mumkin. Bu axborot dastur ishlab chiquvchi tomonidan taqdim etilgan va keyinchalik yangilanishi mumkin.
  • Bu ilova tashqi hamkorlarga quyidagi turdagi maʼlumotlarini ulashishi mumkin
    Joylashuv, Men haqimda va yana 4 ta
  • Ushbu ilova quyidagi axborot turlarini toʻplashi mumkin
    Men haqimda, Moliyaviy axborot va yana 3 ta
  • Maʼlumotlar uzatish vaqtida shifrlanadi

Nima yangiliklar

Lucerna is here: Akari logic puzzles. Place lamps in the open cells until every one of them is lit, without two lamps ever lighting each other. A campaign, a daily puzzle and endless play in four difficulties, solvable by reasoning alone, with hints that point at the next move. Tap a cell to place a lamp, press and hold to mark it as no lamp. Sign in with Google Play Games for achievements and leaderboards.