Qualvio

Qualvio is a sum puzzle: small numbers, moments that click. The board is full of numbered tiles. The goal sits at the top. Link neighboring tiles — up, down, left, or right — until they add up to exactly what the level asks. Hit it and they vanish; the tiles above fall into place. Miss it and the board stays as it is, so you look for another path. The campaign has 144 levels, from the first easy sums to boards that will not fall on the first try. You start by adding. Then come stones that never move, ice you peel one layer at a time, locks, seals, wilds, and negative numbers that subtract. Some levels want an exact chain length, the same number repeated, only even or only odd sums, a cleared board, or several goals in order. When a board gets stubborn, boosters help: a hint, a swap of two tiles, removing one that is in the way, or clearing a whole row. Beyond the campaign: • Daily…