Prism 5: 5x5 Gem Sudoku

Five gems. Four daily grids. Levels without end. A 5x5 logic puzzle in sudoku style, played with gems instead of numbers and without boxes. Fill the grid so that every row and every column holds each of the five gems exactly once. Because they are gems, not numbers, the rule needs no order between them, only same or different. From Medium on, a small frosted gem in the corner of a cell means that gem cannot go there, and every frost on the board is there for a reason. Every grid has exactly one solution and can always be reasoned out. Nothing is ever a guess, and nothing is ever timed against you. The first start goes from a short How to play straight into level 1. Four new grids every day, Easy, Medium, Hard and Expert, the same for everyone, changing at midnight, phone time. Each day of the week suggests a grade, and all four grids are always open Levels without end, in one plain list that always opens at the level you are on: levels open one by one, every tenth is a Hard level, and frost, Zones and harder steps each arrive with a short card that shows what is new Up to 3 stars a level: 3 with no hints and no mistakes. Stars never depend on time, and any solved level can be played again An archive of every day since 1 September 2026, each with its four grids, still open to play Practice: endless grids in four grades, in Classic or in Zones, where every region outlined in ice must hold each gem once too A week medal for a solved grid on each day of a Monday to Sunday week, archive days included, and a crown in the archive for every day whose Expert grid is solved A days in a row count, from grids solved on their own day only. Missing a day ends it quietly: no penalty, no warning, no countdown Hint names the technique and the group to look at, then shows the whole step if you ask again. It puts the gem in only if you ask a third time Check marks any gem that clashes with a rule, on your own board, on demand, or as you play if you turn that on in Settings Undo, Notes for pencilling in the gems you are still considering, and Erase Settings for sound, a light haptic tick, live clash marking, and reduced motion, which also follows your phone system setting Free to play, no account. In-app purchases are optional. Hints cost 20 coins: you start with 60 and earn more by solving grids: 30 for the first of today's grids, 10 for each other daily grid, and 10 to 25 for a practice grid or a level the first time, by its grade. Check and pointing out a wrong gem are always free. Coins for hints can be earned by playing. If you like, coin packs of 200, 700 or 1,600 coins (10, 35 or 80 hints) can be bought through Google Play, only when you tap one; coins have no cash value. Remove ads is an optional one-time purchase that stops full screen ads after grids and levels. Restore purchases restores it through Google Play using the same Google account; optional video ads for coins remain available. The daily grids, the archive and levels 1 to 10 never show an ad. An optional video ad gives 40 coins; it plays only when you tap its button in the coins window on the home screen or the level list, never on a board. Now and then a full screen ad comes after a solved practice grid or level, once you tap Next or Levels: at most 4 a day, never during a grid. The puzzles play offline; ads, purchases and purchase restoration need an internet connection. Levels, grids, coins and settings are stored on your phone and are eligible for Android backup and device transfer. They return only if Android restores an existing copy; purchases made after that copy are not included in it. Made by ARLing s. r. o., Slovakia. Support: [email protected]