More Gameplay

I Forgot to mention another title that utilizes thought provoking mechanics on a basic level. Braid is a downloadable game created by independent developer Jonathan Blow.  Like Echochrome it extrapolates on old videogame conventions.  At first glance it differs little from Donkey Kong or Mario, (save the creative design and painterly visuals); but the gameplay really hinges on the ability to 'rewind' your actions.  Creator Jonathan Blow carefully crafts an experience that questions both the nature of gaming mechanics and of time itself.