OMG,FPSC is not coded to make the next CS or HL...its made to get the fun out of game creation in FPS mode,without coding!
also,theres NO part that tells its possible to do so.so why asking it when 5 others i think asked the same!
Maybe TGC will make it available once.but if you see that one level is already 50MB then dont waste time to make something like that.TGC should first decrease the file size's,then concentrate on heavyer things.now we can save we still dont want to make 50levels,the games size would be HUGE!
the more complicated stuff is Merranvo's work...hes one of the FPSC Master's.
BUT you could have them seperate exe's,combined by a VB application.but multiplayer has 1 map per exe.