Download and unzip the file; open the resulting folder and double-click 2x0ng.exe Please note, this is an alpha release, and contains bugs. Please see project webpage for up-to-date compatibility information, including notes for users of 64-bit Windows 7.
It's simply amazing. All of the levels feel hand drawn even though they are procedurally generated. The puzzles are challenging and you have to think quickly because the enemies are relentless. Can't wait for the full release