Controls
Move the submarine across the top-down map with W A S D.
Collecting Samples
Scientific samples ◈ are scattered across depth layers. Swim up to a sample to add it to your collection automatically. Collecting enough samples unlocks the next deeper layer so you can dive farther right.
Dangerous Creatures
Sea creatures roam the seafloor. Peaceful ones ◐ are harmless, but predators ✦ damage the hull on contact. Dodge them and avoid rocks and coral ▲.
Hull Integrity
Collisions reduce hull integrity. If it reaches zero, the expedition ends.