Zombie Siege Outbreak is a well-designed unblocked game that you can enjoy here directly in your browser, free of charge. It has been played by hundreds of people and has received a rating of 51 out of 100 by 4 votes. This addicting game is built with WebGL to run fast in all modern browsers. One of the many advantages about playing Zombie Siege Outbreak on Avio Games is that it is available in full-screen mode to get the full experience. If you liked it, also play our other shooting games or Total Recoil and Zombie Challenge.