• ✓Idea: Battleship with the war taken out. You hunt for a turtle instead of sinking someone's fleet — identical deduction, nothing destroyed
• ✓Seven boards: can/can't, have to, present simple, past simple, was/were, present continuous, present perfect
• ✓Six subjects down the side, six actions across the top — every square is one sentence, thirty-six to a sea
• ✓The wrong answers are real learner mistakes — He cans, They runned, She don't — never a random word
• ✓Some squares ask for the negative, marked ✓ or ✗, so both halves of each grammar get practised
• ✓`npm run verify:sea` proves all 1,560 questions — no square can ever offer the right answer twice
• ✓Play Beary or a friend on the same sea — no board to hide, no screen passed face-down
• ✓Beary is wrong about three times in ten, on purpose — so a child watches a mistake survived without fuss
• ✓A wrong answer costs the turn and nothing else, and the reason is given every time — right or wrong
• ✓Three wrong in a row buys a breath together
• ✓The painted sea plate: looking straight down at sunlit water
• ✓Seven painted sea treasures: shoal, turtle, seahorse, chest, shell, starfish, pearl
• ✓A say-it mode: hold the button and speak the sentence instead of picking from threeplanned

✓ = done · ☐ = planned. Every game is built one step at a time like this.