Nine

Nine turns simple math into a bite-sized brain teaser. You're given a grid and a stream of numbered tiles, each with a value from 1 to 9. Your job is to drop these tiles into the grid so that any row, column, or connected group adds up to exactly nine. When that happens, the group vanishes, freeing space and earning you points. It's a satisfying loop of plan, place, and clear, but the tension builds as the grid fills up and you have to make tough calls about where to put that awkward 6 next to a 3. What makes Nine so compelling is its blend of foresight and flexibility. You'll need to think a move or two ahead, but the game throws random tiles at you, forcing you to adapt on the fly. Every decision matters—a single misplaced tile can block a future chain reaction. The minimalist design keeps your focus on the numbers, while the escalating pace keeps your adrenaline up. Whether you have a minute or an hour, Nine offers a quick mental workout that's hard to put down.