This game is the haunter of daydreams and dreams in general.
This is an early 1990's NES game developed by Sculptured Software and published by HAL Laboratory, who also went on to create the Super Smash Bros. franchises.
First, the title makes no sense; Davey falls asleep at certain times which is easily considered narcolepsy, a sleeping disorder that is completely different from daydreaming! Also, look at the character designs. Atrocious. Not to mention the teacher on the game's cover art doesn't match her in-game appearance. Davey's cover design makes him better suited for Doraemon or Osomatsu-san, but he's completely differently drawn in-game, as shown here. In addition, the graphics are fugly and terrible, even for NES standards. A teleportation zone in one of the levels literally looks like a pile of feces. In other levels, there is a bird enemy that literally poops what looks like explosive blood! But, on the other hand, the voice samples sound great for a late NES game.
The story is extremely lazy, it starts about a kid whose pencil gets stolen by a bully, and he daydreams during class to get it back.
There's a lack of level settings, there is only the Old West, Ancient Greece, and Medieval times. Certain instructions are not given, particularly during the Old West sequences where you have to shoot a boss' gun out of his hand to defeat him. Other things that make little sense involve you having to pierce the eye of the Cyclops when you can defeat it by just hitting it anywhere, having to defeat a robber by shooting his gun (as previously mentioned), and Davey bringing back a trophy from his dream. Jumping is inconvenient and requires pressing A and B at the same time, rather than just pressing one or the other. To get a shield in one of the levels, you have to touch a character who looks like a palette swap of the enemies, and he can easily be confused for one and killed like them. Additionally, the boss placement is awful.
The ending is dumb, Davey literally gets the answer correct when all he did was daydream all through the movie.
To put it simply this game is absolutely horrible. I hate it and you should too, it's a nightmare. Don't let your kids play it they will be nightmaring and not daydreaming about this game. Extremely bad game, do not play.