StratoGyrLettra

This is a circular letter sequence recall training game themed around foundation settlement patterns. The interface uses a warm earth-tone cartoon style with sandstone beige, clay brown, and sediment yellow as primary colors, creating a geotechnical exploration atmosphere. The main screen features four navigation buttons with gradient textures and geological decorative elements, accompanied by floating particle and wave-layer background animations. The core gameplay arranges letters in a circle formation where the system highlights a sequence one by one, then players must tap the letters back in the exact order shown. Three difficulty tiers are available: Shallow with 6 letters and a 4-letter recall sequence, Medium with 8 letters and 5 to recall, and Deep Core with 10 letters and 7 to recall. Upon completion, a full-screen particle explosion animation dialog displays the result with elapsed time and accuracy. The app includes a comprehensive session history system that logs each round with its difficulty, outcome, and completion time, along with aggregate statistics. The achievement system covers eight milestones including first completion, difficulty-specific mastery, winning streaks, speed challenges, and cumulative play counts. All pages support vertical scrolling for various screen sizes, transitions use slide animations, and interactive buttons feature spring-scale feedback for a polished user experience.