Verified answer

Well it mostly depends on what your friends have. Black Ops sucks when you try to find people online because the server either times out or people dont know what they are doing. L4d 2 is a great game but can get boring after awhile. ive played both l4d 1 and 2 and i think 2 is the better out of the two. All in all i like Black ops zombies more, But you must get the map pack that has the WaW maps...Its amazing!

both are goood games and hard to decide because l4d is great because its fast paced and you can mess about on but does get boring and repetative after a while whereas if you play black ops you can play for hours and hours because you always want to beat you previous score. In fairness they are quite different in aspects of gameplay but you do need the rezzurection map pack to make it equal :) so i will say left 4 dead :)

I like black ops zombies better because lfd2 got a bit bouring after i beat everything but in black ops you always want to go longer, longer abd longer even though my record is almost imposible to beat if guyz wanna try it is 98 kino and 99 Der rise have fun guyz and peace out

I really like both of them but I think black ops is better just because you get barriers and its all in one place and not all over a big area