An old man is about to enter a mysterious cave. a familiar guest needs your help before you descend deeper and deeper into rusty lake. click on the arrows to navigate inside the cube. interact with objects by clicking. select found items in your inventory and click somewhere on screen to use them. cube escape: the cave is the ninth episode of the cube escape series and is a continuation of the rusty lake story. we will unfold rusty lake mysteries one step at a time.