I gave it an 8 mostly for DEX (fans of DEX know who he is) and for comedy value as I found it extremely funny from the very beginning. It can't be serious but I've seen some great acting amongst the zombies - it is advertised as unscripted per se, but we all know it is fake so it comes out as hilarious. The one actor contestant with the hat with the ear flaps is laughing the whole time - even he can't help it. Dex is playing his cool self as usual and figures out how to escape the zombies in an early quest using his UDT soldier experience. Am kind of wondering if it isn't treated kind of like a mystery dinner where each contestant is given their roll to play in advance, but there is no script. Have no idea about the producing but each episode is a different quest (gas station, grocery store, etc). Will have to see how this ends - 8 episodes in all.
Review of Zombieverse
