Summary: The game is now dead but it was very fun while it lasted.To bad though I got it around the release of MW3 (that HORRIBLE game) so I couldn't really find any matches for Zombies or coop campaign. The multiplayer is still active because of its quite amazing search (Used also in BO) for it. The zombies mode is still though somewhat active just it has mostly players (1-2/1-3) playing on modded maps/custom maps.
Summary: I like this game. Its an solid WW2 shooter. With the decent COD4 engine. There are numerous WW2 games on the market. Yet i had most fun with this. It has that Cod4 feeling, simple to pick up and play. Single player was too short but at least it offered an Zombie mod. And lets be honest we all mostly bought it for multiplayer.
Summary: They don't sell this game in Japan because you kill Japanese people. It is quite bloody, but man this game is amazing. A must have game, call of duty was boosted with World at War! Nazi zombies is a very fun thing to play with friends, it also supports online modes. GET THIS GAME!