2D platformers are a dime a dozen and in this day and age very good examples of the genre are being made by teams of one or two people. (nintendoworldreport.com)
For good examples of the genre, download Scumm and play some of the old Lucasarts classics for free. (metacritic.com)
I think the cartoon to the left is a good example of the genre. (firstthings.com)