Overload

Overload turns a chain reaction into a puzzle you set off with a single tap. Every cell can hold a charge equal to how many neighbours it has — two in a corner, three on an edge, four in the middle — and tapping adds one. The instant a cell fills, it overloads: it empties and pushes a charge into each neighbour at once, and any neighbour that fills up overloads too, so a well-chosen tap can roll across the board in cascading waves. You get a limited number of taps, and the scoring loves length — each overload in a single chain lifts the combo multiplier, so the goal is never to poke cells one at a time but to load the board quietly and then find the one tap that detonates everything. Centre cells reach the most neighbours and spread furthest, and clearing the entire grid in a run earns a Perfect Storm bonus. Free and instant in the browser, it saves your best score, and chasing that perfect board-sweeping cascade is where it hooks you.