I can't believe that these "games" are even on vizzed. I only had 1 or two of these videos on gba, but they were for pokemon and sonic... Aside from that, I can't really even be fair to rate these videos.

The graphics aren't par since this is a normal show, made to be shown on a game console. It does seem a little blurry and the colors are a bit off.

Again, not great sound. For the same reason too; because this is only on a gba, and not a flat screen, HD Panasonic.

I don't go on vizzed to watch videos. As in the title says, you can watch spongebob videos, for free:
go on google, type in Spongebob (and then the name of the specific episode), click on the video that has a url of nick.com. I've done it plenty of times.
There are some of the original episodes, from seasons 1-3, 1-4, on youtube, but they are twice the original speed to avoid being removed by copyright

I will skip story since each episode has a different story.

The "game" while not being an actual game, does offer a few videos to choose from, which is nice. I think you get 4, but its an ok deal.

Difficulty? Must I say anything?

I can't believe my mother actual got me these Video Games (pun intended) when I was a kid for like 5 dollars when they are now online for free.
Honestly, if you want to make a review these, video games, might as well rate them on a site called IMDB.com (International Movie Data Base)
where your opinion actually has a voice, unlike on here...