Game File: 

Xaxxaxoxax_win.zip

Also there is a mac version here:
http://vote.grumpybumpers.com/j/rad/4/Xaxxaxoxax_mac.zip

And the source code is here:
https://bitbucket.org/runhello/rad

(Updated 2/29: Fixed problems with graphics, sound and collision handling)
(Updated 3/05: Fixed catastrophic memory leak)