Joy Ball

Joy Ball is a vertical tray‑based weight‑judgment mobile game that combines observation, intuitive judgment, and combo scoring into one cohesive experience. When a round begins, a balance scale appears with two wooden tray boxes suspended on each side. Inside the boxes are randomly placed items such as apples, stones, feathers, books, balls, bricks, coins, hammers, boxes, and bottles, each with a different weight, and the total weight on the left and right sides is never equal. Players must quickly determine which side is heavier based on the combination of items and tap the corresponding tray. Correct answers earn points, and consecutive correct answers build up a combo; reaching three combos triggers double score, tightening the pace. Tapping the wrong side ends the round immediately, and the highest score is recorded. The rules are clear at a glance, with the real challenge lying in observation and on‑the‑spot judgment—easy to pick up yet strategically engaging.