Bathyscaphe

You can only see so far. Your echo travels further.

Bathyscaphe is a single-player 2D underwater exploration game about deliberate movement, uncertain terrain and getting a fragile machine through a hostile place.

A human pilot is sealed inside your submersible. Ahead lies a dark passage. Somewhere near the seabed is a lost container. Find it, secure it and deliver it to the receiving lock at the far end of the sector.