Ubåt Voyage [Submarine Voyage]

The abandoned submarine of the mad inventor Nemo rests at the bottom of the abyss. Legend has it that the submarine does not use any fuel and moves like a living creature. You managed to enter the submarine but have been locked inside! Your only hope is to awaken the heart of the submarine and bring it back to the port! Hurry up – in just one hour, the submarine's powers will trap you on board forever!