Neat
First off, love the bass, very well done with the bass... it may be simple but it is powerful. Also, whatever synth you used sounds really cool with the reverb on it. Overall this was well done.. a good concept, a good start. There are several things that need work, however. For instance, the drums. The drums work... at least for a little bit. But they need more. Add a snare. Make the drums vary more. Also, the song as a whole gets repetitive (mostly that synth). You need to come up with other parts of the song, and make each of the parts vary more. What I mean by vary is change. Repetition is good BUT only to a degree. too much repetition and your audience loses interest.
Again, very well done. And you say you didn't put that much effort into it... Well, YOU SHOULD! :D There is so much potential here, you need to put all your effort into it. Trust me, the results will shock even you.
7/10
4/5