Back in January I participated in the Global Game Jam, a world game development session so to speak. We had to create a game in 48h under the theme "Ritual". Me, and a group of people I just met that day, decided to make something witchcraft related. And so began the most awesome 48h ever.
We made a game about a cute old witch that had to make a potion at midnight but she was missing the most important part of the recipe paper...the ingredients! So the player had to find the correct ingredients and throw them in the cauldron.
If I got your curiosity, you can play the game here.