The Magic Circle

You play the part of Professor Pointer, inventor of the time gate theory. After years of ridicule from your colleagues you decide to prove your theory by building a time machine based on your principles and returning from the past with an artifact to show them. So you gather together a few things you'll need and press the button on the machine. There is a sudden flash and to your delight you find yourself in the land of legend. Unfortunatelly, when you are transported, you realise that the machine didn't follow you and you must set off on a quest to find a way back to your own world.