gave it a five, great transitions
thats what i thought it deserved. i liked the beat and the way the song came together. the progression was pretty cool. i downloaded it too because i think it just sounds pretty awsome, i liked the melody and how the sound changed so often. good work keep it up.
I like it, and the game was also fun. Although, my one critique would be that, even though you named the song after Portal, there are no lyrical, nor musical references to it.
Please contact me if you would like to use this in a project. We can discuss the details.