Okay, this is my review and I believe it is fair; if you don't, feel free to say.
Lets start of with the graphics. All of the graphics here are very realistic, and seem to fit well together. However, the background to me seems to busy and distracting from gameplay. What I would have is a much simpler background, maybe just a gradient. Also, the border seems really unnecessary. The bottom seems to be part of a machine making it look like an old game, however I feel that in this game in partcular it doesn't add to the game and instead makes it seem worse. At the top the border has a 'buy n credits' button which doesn't seem to do anything and is quite unprofessional. It also has a buy on ubuntu button which again, with a white button really stands out in a bad way.
For graphics I would award it a 2/5 as some are good just there hasn't really been a sense of playability or of unity between all of this.
Next, gameplay. Overall I felt the gameplay of this was rather nice, however I didn't really feel I was achieving anything or that I had much purpose. I think the gameplay would be greatly developed if there was a stronger storyline. Also, although platforming was fine, there wasn't any instructions on how to play anywhere and I also think this would have benefitted from some sort of tutorial. Remember, not all your players programmed the movement or enemies and you are the most knowledgeable in this area.
Due to all of this, and my own opinion I am giving it a 1.5/5.