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Under Windows there is XNA.
http://gdk.thegamecreators.com/
I messed around with that for a few hours. Seems like a decent place to start.
ya, im on a windows machine
I haven't used XNA personally but I would discourage its use just because of it being so heavily tied to Microsoft products.
Yes, but on the plus side, despite being tied to Microsoft products, you are able to develop games for three different platforms (PC, Xbox and Zune), using the same framework.