Just when I thought SAS was over...
Thank you for making another wonderful zombie game. Here is my review.
Music: Good music, mostly ambiance. Adds a "chilling" feeling. I like the ambient door closing and ring around the rosy.
Graphics: Great graphics and effects. Your artwork is fantastic and their isn't much to be said on this topic besides: Well done, man.
Multiplayer: Too short rounds, I'm not sure if you can customize it in private matches but you should make it so they have a map vote and also a round vote. Also, try to match people instead of having "SPARE BRAIN" in your party (2 of them for me). But, then again, it's awesome.
Single-player: I'm not sure if it's still like SAS 2 where you can upgrade your walls but I hope so.. If not, well.. It wouldn't be the same. Sentry guns are still there which is great. I like single-player but you should make more maps.
Bugs: Didn't find much of any bugs. Good job.
P.S: I didn't think you'd make another one, but here I am reviewing it, so, good job, I hope you may reply to this (Highly unlikely) and thanks for reading.
Final score: 9/10 4/5.