I prefer to do it this way

on *:text:*:#: {
  if (.flags == $1) {
    set -u15 %ct = $ctime
    set %flagsnick $nick
    var %item = $rand(1,15)
    if (%item == 1) { msg $chan $read italy.txt | msg $chan $read italy2.txt
     set -u15 %answer italy 
    }
    elseif (%item == 2) { msg $chan $read sweden.txt | msg $chan $read sweden2.txt | msg $chan $read sweden3.txt
      set -u15 %answer sweden
    }
    elseif (%item == 3) { msg $chan $read france.txt | msg $chan $read france2.txt
      set -u15 %answer france
    }
    elseif (%item == 4) { msg $chan $read germany.txt | msg $chan $read germany2.txt | msg $chan $read germany3.txt
      set -u15 %answer germany
    }
    elseif (%item == 5) { msg $chan $read hungary.txt | msg $chan $read hungary2.txt | msg $chan $read hungary3.txt
      set -u15 %answer hungary
    }
    elseif (%item == 6) { msg $chan $read austria.txt | msg $chan $read austria2.txt | msg $chan $read austria3.txt
      set -u15 %answer austria
    }
    elseif (%item == 7) { msg $chan $read indonesia.txt | msg $chan $read indonesia2.txt
      set -u15 %answer indonesia
    }
    elseif (%item == 8) { msg $chan $read poland.txt | msg $chan $read poland2.txt
      set -u15 %answer poland
    }
    elseif (%item == 9) { msg $chan $read ireland.txt | msg $chan $read ireland2.txt
      set -u15 %answer ireland
    }
    elseif (%item == 10) { msg $chan $read spain.txt | msg $chan $read spain2.txt | msg $chan $read spain3.txt
      set -u15 %answer spain 
    }    
    elseif (%item == 11) { msg $chan $read finland.txt | msg $chan $read finland2.txt | msg $chan $read finland3.txt
      set -u15 %answer finland
    }
    elseif (%item == 12) { msg $chan $read libya.txt | msg $chan $read libya2.txt
      set -u15 %answer libya
    }    
    elseif (%item == 13) { msg $chan $read portugal.txt | msg $chan $read portugal2.txt | msg $chan $read portugal3.txt
      set -u15 %answer portugal
    }
    elseif (%item == 14) { msg $chan $read angola.txt | msg $chan $read angola2.txt | msg $chan $read angola3.txt | msg $chan $read angola4.txt
      set -u15 %answer angola
    }
    elseif (%item == 15) { msg $chan $read russia.txt | msg $chan $read russia2.txt | msg $chan $read russia3.txt
       set -u15 %answer russia
     }
     .timerFlags $+ %answer 1 15 msg $chan Time's Up
  }
  elseif ($nick == %flagsnick) {
  if (($1 == %answer) && ($calc($ctime-%ct) <= 15)) {
      if ($nick == %flagsnick) msg $chan Very good $nick you guessed the name of the flag!!
      unset %answer
      timerFlags* off
    }
  }
}

List of flags;
http://www.megaupload.com/?d=AWY821AA

I accept all kinds of commentaries: P