Gilbert Goodmate and the Mushroom of Phungoria

The sacred mushroom of Phungoria has been stolen, Grandpa Goodmate is going to be executed and things ain't looking too good. Now it's up to YOU... catch the thief, recover the mushroom and save Grandpa... all by the end of the week. So hurry Gilbert, time is running out... Oh, and do try to keep your hands off the Princess!