First song sounds good, but the second song seems to have a bit of dynamic range compression. They also have very different frequency behaviors, so I'd guess that they were mastered by different people or using different systems. Second song is more of a constant beat type music, so I might be mistaking that for DRC. I would have given a + for the first song and nothing for the second, but as a whole, I'm leaving it neutral.
Either way, I'm not too fond of these songs. I also didn't know anything about these songs because I don't play games, and so maybe I'll get to like them more if I listen to them more often.