Your wizard must find his way through each floor of the temple, using coloured orbs to open locked doors. When you are carrying a certain colour orb, it will open any door of that colour. However, you can only carry two orbs at once, and you can only drop them on special orb pedestals.
Later, some pedestals disintegrate when you take their orb. And some doors even only open when you are not carrying an orb of its colour.
It soon becomes mind-bending stuff as you realise you need the green orb to get the yellow orb to get the orange to drop the yellow to get the green to get the blue to... oh god, where am I going to find a pink one?!
Magic Orbs [Armor Games]