(Cover art taken from Kami Sama Explorer.)
"Atsumare! Goku World" is a special animation made for a Japanese interactive toy called the Televikko. As far as I can tell from the special, a little symbol pops up on screen and you (the small Japanese child) pick up your televikko phone and speak to the character on screen. The character gives you a multiple choice question, and you press the button on your televikko that corresponds to the correct answer. Since it's a VHS tape, I'm not sure what happens when you're wrong. It seems like a strange precursor to DVD games.