Collect all treasures within each underwater stage to advance. Avoid sea creatures or use Invisibility to hide from them. Perform a Deep Dive to move faster or escape danger. Activate glowing runes for extra points and stun enemies. Reach the deepest zone without losing all energy to complete the expedition. Controls Desktop Move: W / A / S / D Invisibility: Spacebar Deep Dive: Shift Mobile Move: Virtual Joystick Invisibility: "Invisible" Button Deep Dive: "Deep Dive" Button Key Features Underwater exploration with layered difficulty and stunning visuals Invisibility and Deep Dive mechanics for strategic movement Dynamic ocean currents and environmental hazards Collectible treasures and glowing rune system Optimized HTML5 performance for both desktop and mobile