Pearl Diver sends a small brass submarine into a blue underwater garden. Collect six glowing pearls, then return to the cyan dock ring before the oxygen timer reaches zero. A pearl is collected only when the submarine approaches it in all three dimensions, so depth matters as much as position across the seabed.

Drag the round left control to move horizontally. Hold RISE or DIVE on the right to change depth. These controls can be combined to travel toward a pearl while adjusting height. The sonar marks your submarine in white and the next target in gold. A separate readout gives the target depth; after collecting the last pearl, the objective changes to returning to the dock.

Fifty expeditions place their pearls at different locations and depths. The expedition chart shows all fifty choices in five depth bands. Coral shapes, rocks, pearl stands, bubbles and the detailed submarine are rendered in a shaded three dimensional scene. The camera tracks your exploration from an oblique angle. This is a collection and navigation challenge, without combat or an equipment economy. Watch the oxygen meter and plan the return journey rather than spending every remaining second at the far side of the reef.

Start from the title scene to play the last selected challenge, or open the game's own campaign browser to choose a different one. All fifty challenges are available from the beginning. Completed entries receive a visible mark, and progress is kept locally on the device. Replaying a completed challenge does not remove its completion mark. There is no requirement to finish earlier entries before exploring later ones.

Pause stops the active attempt and opens controls for resuming, restarting or returning home. Restarting an unfinished attempt requires confirmation. Continue starts the last selected challenge again; it does not restore an unfinished position after closing the application. Returning from an interruption leaves the active game paused, so you can decide when to resume. The result screen offers a retry and an appropriate route back to the campaign or onward to the next challenge.

Settings let you switch sound feedback, decorative motion and dynamic shadows on or off. Essential gameplay movement continues when decorative motion is disabled. The larger text option increases interface lettering. Brief synthesized sounds and touch feedback accompany actions and progress; there is no recorded soundtrack. How to Play explains the controls and objective within the application.

The interface is in English. Gameplay works offline and does not require an account, an internet connection or an advertising service. Scores and completion are stored on this installation, without an online leaderboard or cloud synchronization. The illustrated sky, materials and visual effects complement real shaded geometry. Choose a challenge, learn its controls and return whenever you want to improve an attempt.