Something

on *:input:#: {
  if ($1 == !guesson) { /set %number $rand(1,100) | set %guess on | .timer 1 .5 msg $chan Type !guess <number> }
  if (%guess == on) && ($1 == !guess) && ($2 < %number) { .timer 1 .5 msg $chan Greater then $2 {
      else { msg $chan a game of guesing is not on, type !guesson to start it. }
      elseif (%guess == on) && ($1 == !guess) && ($2 > %number) { .timer 1 .5 msg $chan Less then $2 {
          else { msg $chan a game of guesing is not on, type !guesson to start it. }
          elseif (%guess == on) && ($1 == !guess) && ($2 == %number) { .timer 1 .5 msg $chan Wahoo $nick $+ , you got it right, the number was %number | unset %number {
              else { msg $chan a game of guesing is not on, type !guesson to start it. }
            }
          }
        }
      }
    }
  }
}