Unfortunately there is not. If you install the Sandbox 2 editor, you can make your own maps (kinda hard) and put bots, aliens, tornado's and much more into them and it's really fun.
But there is a lot of things to do with two people in Crysis Wars. Me and my cousin were playing around driving and stuff, doing derby and stuff. Plus we would go on other teams, take over points and get our rank up and such so we have lots of money and buy vtol's, go parachuting, helicopter vs runaway car and much more. It's more fun than it already sounds!