Eyes and Tone is a minimalist color vision game designed to test and train your visual perception. Each level presents a grid of colors. All tiles look identical except one. Your task is to find the subtle difference before time runs out. As you progress, the grids become larger and the color differences smaller, pushing your focus and color sensitivity to the limit. The game is endless, fair, and carefully balanced. Difficulty rises in rhythmic waves to keep you challenged without frustration. After every hard level, the intensity resets while the grid continues to grow, creating a satisfying flow that encourages long play sessions. From higher levels onward, time pressure is introduced, turning perception into a true test of speed and accuracy. Track your progress with Game Center leaderboards, unlock achievements as you improve, and compete with players around the world. Whether you play for a quick break or a long session, Eyes and Tone delivers a calm yet demanding experience built around clarity and focus. Features: Endless color perception gameplay Clean, modern design with no distractions Progressive difficulty with smart resets Time attack mode at higher levels Game Center leaderboards and achievements Optional replay through rewarded ads Support the developer with Buy Me a Coffee Eyes and Tone is not about luck. It is about attention, patience, and how well you see.