I don't think I've ever played Tetrisphere. I'm sure I'll try it some day. But the game itself is almost beside the point here. Egad on the broken teeth, man. That is my worst nightmare.
Nintendo crafted this ad to be perfectly in line with the prevailing advertising style of the mid-late 1990s. Look back at a game magazine from that time and you'll see that almost every ad shows someone getting hurt, dismembered, or flagellated in some manner. And if not that, then they were too busy distributing boogers / urine / feces / something gross all over the place to feel left out. The edgy advertising trend started when Sega began purposely assaulting Nintendo's kiddie image in the early 1990s. And it spread. By 1996, even Mario games were advertised this way. Did you Play it Loud?
I covered this phenomenon to some extent back in my Game Ads A-Go-Go column on GameSetWatch in 2006 (especially "Proof that Video Game Companies Want You to Die"). The 90s were a time of growing pains — a sort of "teenage years" for the medium — when the game industry, gamers, press, and lawmakers alike embarked on an entirely new cultural exploration of mature themes in video games. I'm sure I could write a whole article on the subject, so I'll stop now and let you count your teeth.
Discussion Topic of the Week: What's your all-time favorite version of Tetris?