Ok so to help you find what your after this is what I would do.
Fit a mini tower,a hard drive,power supply,fan at the rear inside a box with hdmi port to plug into your TV and USB Port to plug in a xbox controller or wireless dongle for Xbox controller id fit a power button to start it up,then install hyperspin onto windows that is shelled to start up straight into hyperspin.
This can be done BUT here's a few problems and ideas I have in mind
That box is gonna look ugly why not think of some artwork for it.
Here are some problems
1.if you plug it into your tv windows may not support it or may have sound issues.
2.if you use a USB to connect to a controller you may have driver issues.
3.even with a mini tower that box isn't going to the same size as a Xbox or Ps3
Hop onto my site if you would like this built ill send you a price.
Or get a laptop that has hdmi out and do the same without the box or you if want a smaller machine and a limited amount of games why not pick up raspberry pi
Or ouya they both support other controller and will be the fraction of the price
Steve
