I think all the examples here are great. It's interesting to see also, that either retro or more recent side-scrolling titles are so varied in their genre, style, and how you play them. To me, games like Limbo for example, are about atmosphere and communicating certain emotions and a sense of danger through level design.…
Inspired by Shotgun's thread http://www.polycount.com/forum/showthread.php?t=114791 I decided I want to see what 2d and 2.5d side-scrolling games people love or enjoy the level design in. Post an example or title of some side-scrollers that you think are well done, or just have awesome levels in which you really appreciate…