SumStrike

tanshuang

About this game

A problem flashes up — 7 × 8, or 12 + 9 — and three answers wait below. Tap the right one, that's a point. Tap wrong, a life goes, three total. It's the same arithmetic you stopped doing on purpose years ago, and suddenly it matters. The timer shrinks, the numbers grow, and the easy ones start hiding behind bigger ones. You'd think an adult brain handles this fine. It doesn't. There's a strange panic in knowing the answer and still tapping the wrong button because your finger moved before you finished thinking. You walk away, then come back. The math never gets easier. You just get faster at admitting you know it.