Ever so often we get VERY original games which are actually quite simple and really inspire you to get designing and coding. Curiously, most of them come from the Flash comunity, for example: Time Fcuk.

Recently, I stumbled upon Canabalt, which surprisingly took an overrated concept and converted it into something quite fun, challenging and all of this around a very tense atmosphere. Try it out! http://www.canabalt.com/