Each game is different, but many platformer games (especially those in the larger Mario universe, like the Wario series) share the same level types. So which one is your favorite?
I usually like Over worlds just because the upbeat music that plays during them and usually fast pace moving that goes on. I actually like Underground they are usually a slower pace,nobody likes Water or Auto-Scrolling...I'd be surprised if somebody did! XD And air platforms usually are annoying and slow. And it's quite easy to die on them just by falling off,and there is a lot of flying enemies so it just makes it even more easy to die. (Unless there is a ground below the player,but usually that is not the case. ._.)
Ahem.... "nobody likes water"? I thought that was just a popular thing to say on the Internet (how much truth is in it?)
Some of the most beautiful places in video game history are underwater scenes. They help flesh out the game's variety and pace, and are always an opportunity to immerse the player in rich ambience and atmosphere. Take the original Donkey Kong Country and Donkey Kong Land.... both have some absolutely gorgeous water levels for their respective platforms. Wario Land 1 and 2 also had some lovely, easy-going water sections. Ecco the Dolphin speaks for itself (though is an acquired taste, I'll grant you).
I was more on the mindset of Sonic & Mario. So I totally forgot about some actually good Water levels...So I probably shouldn't have said that. =/
Haha, Water has actually got the most votes at the moment
fire levels
I like sky levels, or levels that generally have a lot of verticality to them. For example, Super Mario Sunshine has a lot of areas where you can get way up high and look out over the world, I love when a game gives you that opportunity. I also love the thrill of being in a precarious position, knowing that you could easily fall to your death at any time : ) Rainbow Ride best SM64 level.