Lightmine: Light Gem Puzzle

Lightmine is a deduction puzzle: fire beams of light into a dark mine and work out where the hidden gems are and what shape they take. Solve at your own pace, or take turns against another player online. Read the light Each beam shows where it comes out and what color it has turned. A slanted gem edge turns it 90 degrees; a flat face sends it straight back the way it came. A beam picks up color from each red, yellow, blue or white gem it hits (hitting the same color twice counts once). Use the exit points and colors as clues to place the gems, then submit your answer. Three mines • Basic: one red, one yellow and one blue gem, plus two white gems with different shapes. • Basic + Crystal: adds a clear gem that bends and reflects light without changing its color. • Basic + Black: adds a black gem that swallows any beam that hits it. Solo You get 20 actions in total, shared between firing beams and inspecting cells. Inspecting a cell tells you whether it's empty or shows the color and shape of the gem piece inside. Fewer actions means a higher score, but a wrong answer ends the game on the spot unless you have a Retry item, which forgives one mistake per game. 1v1 battles Each player hides gems in their own mine, then you take turns firing beams or inspecting cells. Solve your opponent's layout first to win. You lose if you run out of time or submit a wrong answer, though a Retry item can save you once. Random matches cost 10 gems to enter and pay 20 for a win. Friend matches are free with a five-digit room code or link and don't affect rankings or gems. Collect and customize Spend gems on mine themes, beam styles, pets, titles and emotes, or on items that reveal empty cells or preview a beam's path. Spin the lucky roulette twice for free every 2 hours, plus up to five more times by watching ads. Gems come from playing, the roulette and sharing rewards, and are never sold for money. Rankings Separate solo and battle rankings for each mine, by day, week, month and all time. Good to know • No sign-in needed. An internet connection is required. • The game is available in English, Korean, Japanese, Chinese, Spanish and French. In Chinese, Spanish and French, the how-to-play guide and item descriptions are still shown in Korean. • There's a banner ad, and a full-screen ad appears after every four games. • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://lightmine.vnamu.com/privacy