As promised, the Serious Sam 2 demo is now available. The 236mb download includes the Seriousopolis Uptown level, which you can play by yourself or in co-op mode with up to four people. The demo also includes one vehicle, several enemy types and all of the game's fifteen weapons (though you'll have have to cheat to see them all).
oh croteam, how I love your games. can't wait to get home from work to try this out.