A bunch of us here make and work on games as well as playing them. One of the sites I really like is Lost Garden - it showcases many new games made from art and code the main author provides. A recent article has free tilesets and how to bootstrap your art needs. And if I can attest to the one thing that after the engine is done - is the overwhelming amount of art and variety of art expected in a game. Having made over 5000+ icons for Lord of the Rings Online - and over 1000 animation sets for Hillbilly Whack! art creation and getting it all done is just killer.

Anyways - check out Lost Garden first and then find yourself lost in the thoughts of people making games.

At Lost Garden