Silent Depth

Hunt a convoy by sonar, fire one torpedo attack, then slip away from the escorts.

Every time you raise the periscope or surface, you learn more about what's out there, but you also become easier to spot. Your submarine carries plenty of firepower but sees little. Passive sonar for searching out the convoy. Procedurally generated convoy routes, with a different path each run. Esco…

Description excerpted from the original listing, which is linked below.