Portal 2
As they move forward, GLaDOS begins to repeat things that Caroline says and becomes confused. When they move into part of the lab that was used during the 1980s, a message from Cave says he has gotten cancer from working with moon dust and he is dying. After a rant about the unfairness of life, he says that he wants Caroline to run the company after he dies. GLaDOS comes up with a plan to destroy Wheatley once they find him.