Mobilego ico accept GAME for their ico, I'm sure its one of the reason till the 1st day ico start.
GAME holder sell them to go into mobilego
Also most alt have ATH this month, so now they dump.
Yup. price dump on Game was expected. most of GAME holders are moving to Mobilego. so they are selling their coins either investing them to ICO.
thats why you are seeing a big price dump.. don't know if the price will recover or not.