Coin Linker

Coin Linker is a coin-merging puzzle set in a working mint. Draw a line through touching coins of the same denomination and they fuse upward — pennies into nickels, nickels into dimes, all the way to a struck gold bar. Every board is a hand-authored grid with its own goal, its own par, and its own stubborn corner you will learn to hate.

The board remembers you. Every coin that clears drops onto the stud beneath it, and those studs wear. Hammer the same lane over and over and the metal work-hardens, then deforms, then shears clean off — permanently. The coins you lose settle into a mound at the foot of the board and stay there. Come back to a board you have been grinding for a week and it is visibly not the board you started on. Nobody else's Spark Plaza looks like yours.

Your coin is yours too. In the Alloy Forge you strike it from real alloys — brass, steel, lead, glass, tungsten — and the metal you choose changes how it plays, not just how it looks. Retire a worn coin to the Ledger and it keeps its biography.

Four powerups, twelve boards, an endless run, a daily forge, and awards for the kind of shots nobody plans. No timers. No ads. Just you, the grid, and a board that keeps score of everything you have done to it.