Russian submarine KYPCK submerges after a big stroke. Now ?t is in the ocean 146 metres deep and 118 crew in it. You are going to save them. You can save them with your small submarine LR5. Control LR5 with arrow keys. You can dip with SPACE button. There are index at the corner of screen. If there are 0,0,146 pointer, you can start to play. you have limited breath so you must be quick. Have a good time..