A crossover fangame of the Touhou and Earthbound series made by S-chan in RPG Maker 2000, first posted in video format on Nico Nico Douga before it was actually released in April 2009. It is known as 東方星母録 (Touhou Seiboroku, or "Touhou Star Mother Record") in Japanese.
A sequel, Return of Touhou Mother, is in the works.