Going all the way back to Super Mario Bros. 3, the Mario series has had a long-stranding and honorable tradition of having its protagonist slide down hills on his butt. Many unfortunate Koopa Troopas and Buzzy Beetles who have been on the wrong end of Mario's butt will tell you it's one his most deadly secret weapons. The game never really explained if this invincibility came from momentum or magic butt powers (I have theories), but for whatever reason Mario decided to get on his feet for the the Tall Trunk Slide of Mario Galaxy 2. This new posture and confidence lets Mario run on the ceiling when the slide fills out into a tube, a continuation of the Galaxy series' theme of playing with gravity.
It's easy to describe cult-classic Gunstar Heroes as "anime Contra," but then you'd be leaving out the time-reversing bombs, Dice Palace boss/board game, and the epic 7-part battle with Seven Force. This is a relentlessly creative game that even features an exciting anti-gravity twist on the mine cart level. Their take on the slide level was simple just add guns. That's right, Gunstar Heroes is the only slide level on this list where you can actually shoot a gun while you slide. The Pyramid is one of videogaming's most satisfying slide levels because it's not about avoiding obstacles, it's about blowing right through them.
It's hard to believe now that we're drowning in first-person shooters starring space marines, but in the early 90's the dominant genre of videogames was platformers starring wisecracking animals. In 1993, Bubsy the Bobcat dropped into a crowded space that already included Sonic the Hedehog, Sparkster the Rocket Possum, Whistler the Bear, Rocky Rodent, and Zero the Kamikaze Squirrel (and I only made up one of those). While many of these games use slide levels to change the pace and break up the action, Bubsy liberally sprinkles slides throughout nearly every level to avoid action. Now I know there's a lot of haters out there probably thinking: "Whatever, they probably don't even play special music when Bubsy goes down the slides. I need something spicy to be excited!" Guys, WATCH THE VIDEO. There is a special slide theme that plays every time you go down a slide, over and over, no matter how long the slide actually is. Sometimes it plays even after you've left the slide, just to make sure you're still riled up. So please, watch before you judge Claws Encounters of the First Kind.
Some slide levels can be difficult or frustrating, but not Mt. Slide. Kirby was never a franchise known for its difficulty, but Kirby's Epic Yarn dropped the bar even lower by taking death out of the equation. It's a game for babies and stoners. Most levels in the game can be beaten by anyone who just holds right on the controller, but Mt. Slide doesn't even ask that. At the very least, Kirby should have had to eat a snowboard.