加the是因为特指.我认为：此句中的call做的是谓语,根据句意和时态为一般现在时.而你所说的play a game called "trick or treat' i have a dog called Eiddie.这两句中的called做的是宾语补足语,
play a game called "trick or treat'=play a game which is called "trick or treat'
i have a dog called Eiddie=i have a dog who is called Eiddie .