Sum Up 10

Numbered balls drop and bounce into a growing pile. Land two that sum to 10 and they become a ten. Land two that match and they merge and double — 4s into 8s, 10s into 20s, 20s into 40s. You’re always choosing: make the 10 now, grow something bigger, or leave space so the pile doesn’t overflow.

No clock. Take your time. Keep coming back to beat your high score.

• High scores and Game Center leaderboards • Achievements as you merge into bigger balls • Challenge friends for the highest score on Game Center • Dark mode