King's Quest VI: Heir Today, Gone Tomorrow

King's Quest VI: Heir Today, Gone Tomorrow is the sixth installment in the King's Quest series of adventure games produced by Sierra On-Line. The name of this sequel is a pun on the common phrase "here today, gone tomorrow". This pun is related to the abrupt departure of Prince Alexander after the events of King's Quest V, where he was just rescued by King Graham along with Princess Cassima, who asked Alexander to come visit her at the end of that game. King's Quest III: To Heir Is Human also contained the word "heir" in its title and also featured Prince Alexander (then known as the slave Gwydion) as the main character. King's Quest VI: Heir Today, Gone Tomorrow follows Prince Alexander's attempt to save his true love, marry her, and ultimately becoming the king of the Land of the Green Isles. The magic mirror pointed him in the right direction to finding the kingdom.