The annual Mushroom Festival is considered the event of the year. People from all around attend to celebrate and remember the events of the past. Long ago, an evil wizard was defeated using only a mushroom. Ever since then, that very mushroom has held a place of honor in the center of the town of Phungoria, and a new person is appointed each year to watch over it. Suddenly one morning the mushroom is stolen, and Gilbert Goodmate's grandfather, this year's keeper of the mushroom, has been blamed. Somehow Gilbert must find the mushroom, the thief, and save his grandfather from the gallows!

Gilbert Goodmate and the Mushroom of Phungoria is a humorous, 3rd person point and click adventure game made in similar style to the Lucas Monkey Island series. Gilbert's quest will involve exploring in and outside of Phungoria, talking to a multitude of characters and solving inventory-based puzzles. The game features hand-drawn, cartoon style graphics, an original musical score, and a cast of voice actors and actresses.