so like?

on *:TEXT:*:#: {
  if (!Number == $1) {
    if (!%num) {
      set -u60 %num $rand(1,100)
      .timer 1 1 msg $chan 3I 5have set a number, it is between 1 and 100.
      .timer 1 2 msg $chan 3To 5make a guess, type: !guess Number_Here
      .timer 1 3 msg $chan 3Start 5guessing now, you have one minute to guess the number.
      .timermin 1 120 msg $chan 3Game5 is now over you had one minute
    }
    else { msg $chan 3There 5is a game going right now }
  }
  if (!Guess == $1) {
    if (!%num) { msg $chan 3There 5is no game in progress. }
    else {
      if ($2 < $($+(%,num),2)) { msg $chan 3Higher. }
      if ($2 > $($+(%,num),2)) { msg $chan 3Lower. }
      if ($2 == $($+(%,num),2)) { msg $chan 3Bingo. 5 $+ $nick guessed the right number %num $+ . | unset %num | timermin stop }
    }
  } 
}