save and run this code

game.rb

print "enter a max value? "
max_value = gets.to_i
target_number = rand(1..max_value);

def game(max_value, target_number)
  print "Guess a number between 1 and #{max_value}? "  
  user_input = gets.to_i
  max = max_value;
  target_value = target_number
    if user_input == 0 || user_input > max
      puts 'not valid'
      game(max, target_value) 
    elsif user_input == target_value
      puts 'Congratulations! '
      return true
    elsif user_input > target_value
      puts 'too high'
      game(max, target_value)   
    elsif user_input < target_value
      puts 'too low'
      game(max, target_value)
      
    end
end

game(max_value, target_number)