Together with the underwater inhabitant of the ocean depths, called Oceanus Man, you will go on an exciting journey to fight sea monsters and free the underwater world from the impending darkness. The hero, although he lives constantly under water, still requires oxygen for breathing, so you should monitor the level in the air scale and replenish it by collecting oxygen cylinders. Beware of black predatory fish, if one clings to the body, it can no longer be dragged away and death is guaranteed. The hero can run on the seabed and swim in the water column at the same speed. The choice of movement depends on the terrain and the situation in Oceanus Man.