The tide is rising. Solve positive & negative integer problems to hold it back, build your shelter, and survive night after night!
Pick your starting challenge:
Tap the correct answer (or press 1–4). Right answers push the tide back and raise your Health; wrong answers let it rise. Reach the daily quota of correct answers before Health hits zero to make it through the night. Build a streak to grow your shelter, and the game learns your weak spots to give you more of what you need. 🏝️