Left 4 Dead. Where do I begin? Such an amazing game, with many features that make it have thousands of hours of replayability. But that's not really telling anything, now is it? Today, I will talk to you why Left 4 Dead one and two is one of valves greatest series. 1. The actual gameplay. Left 4 Dead has a great creepy atmosphere for a zombie game, which is crucial, as some modern games today fail that perfect atmospherical design. The feeling of the unknown while accompanied by friends who also have almost no knowledge, is terrifyingly exciting. Especially whilst playing alone with either bots… or nobody. The weaponry feels fair and nicely designed. Starting out very simplistic with fire axes and pistols, you go through immersive environments, and going through rooms and new floors, you can find new weaponry to help out you and your team. Health kits, pain pills, adrenaline shots, ammo cans, defibulators, and even different types of ammo like incendiary and explosive bullets that you can place down for your team. In Dead Center, one of the first chapters for the game, you find new weapons that progressively become better after a while. You eventually can raid a gun store in the second to last level and can get laser sights which make your guns more accurate, and you can choose to stick to that upgraded weapon or get a slightly stronger one later on, at the cost of no upgrades. Each level makes it feel like everything is connected and that all your decisions matter on what you do. Another great part of the gameplay is the actual zombies. First you have the weak common infected, which if in a large crowd, can do substantial damage if you are not prepared / with your team. Some zombies are in W.H.O like apparel, called CEDA, which have hazmat suits and are resistant to fire, and sometimes have a certain type of throwable, which I will talk about later.