Summary: There are so many things about this game I can imagine that must be in every FPS. Gameplay - 5/5 - Here's why. Instead of giving you directions of what to do every step of the way(which can be annoying and less entertaining in my book), it wants you to find out, plus it makes exploring very fun. You can play campaign in two ways, by yourself or grab a friend and play campaign co-op.
Summary: This is one of the best offline first person shooters ever made. It's one of the last game to use BOTS and there are some pretty cool level designs and a ton of creative players and weapons. Single player mode is mediocre at best but the multi-player is great. Good buy for under $8.