The visual and audio work well together to create a nice experience. The style of the game is very consistent and well conveyed.
Somethings were a little confusing to me at first though. Like for one, should I be trying to hit squares that are the same color as me? This does not seem to be conveyed clearly to me. A small tutorial or introduction would be nice to tell users what they are supposed to do. Also, this isn't what I typically think of when I hear "survival game," so this was certainly not what I expected when I downloaded it. Not a big deal, but it may mislead other people in the future also.
Another problem I encountered (and this may just be my computer) is that the bottom is cut off so there seems to be things that I can't access.
Overall that game-play is pretty fun although simplistic is pretty fun and addicting. The main problems I had with it was just communication. Well done.