300 meters underwater

Swim out of the ocean (top right) before running out of oxygen (top left)

w, a, d move left and right

Obstacles will drop above (it will hurt) and oxygen cylinders (restore oxygen)

shift to accelerate (both oxygen consumption speed and speed will increase)

e Open the pause menu

在氧气（左上角）消耗完前游出海面（右上角）

w，a，d 左右移动

上方会掉落障碍（碰到会受伤）和氧气瓶（回复氧气）

shift 加速（氧气消耗速度和速度都会增加）

e 打开暂停菜单