The Gray Square

The Gray Square is a minimalist color-swap puzzle on a 7×7 board, and it runs on one rule: swipe, swap, match the goal. No ads. No timers. No lives. No account. Play offline, any time. You are the gray square. Swipe and it slides one cell. Wherever it lands, it trades the color it carries for the color already there. That is the whole game: every move that fixes one cell disturbs another, so a board gets solved in your head before your thumb moves. Only a few cells on each board are marked. Match those to the goal and the level is done. The rest of the grid is where you park a color you will need in four moves' time. A solution is a delivery route, and the color you need in the middle is usually sitting in a corner. PAR, GOLD AND KEYS Every board ships with a par: the fewest moves it can be solved in, found by a solver before you ever see it. A live move meter tracks you against it.…