Not Just A Walk In The Park
It doesn't end there, the game also comes with a map editor which is fairly easy to use, although most of the objects are filled with a "Replace Me" texture which is very irritating.
Multiplayer isn't very good as most of the maps are too big, but the ability to make your own maps makes up for this. What this game really needs, is a co-operative mode in multiplayer.
Conclusion, this game is well worth getting and you will not be dissapointed.