An interesting collection of minigames. The dream worlds were definitely strange.
The sounds were good but some atmospheric background music would have really added to the game.
I don't think the overworld added much to the game in terms of enjoyment, but probably took you some time to develop. If you had just had a UI menu to choose the games/levels you would have had more time to put into each game or been able to make more levels, or more cutscenes into the nice theme idea.