His first attempt was a failure. His creatures didn't do what he wanted them to do so he drowned them. All, that is, but one who followed his commands regardless of how silly they sounded.
His brother wanted to play too. They changed the game to see who the creatures would obey. One creature praised him no matter what he did to it. That made him happy. After he destroyed that one they split the creatures into teams and had them fight each other.
Mommy called down the hall, "Boys, stop playing Little Gods (™) and get ready for church."