How to Play
                        
                     
                    
                        - Choose your numbers and difficulty:
                            
                                - Enter single numbers, comma-separated lists, or ranges using a colon.
                                    Examples:
                                    3 (just 3)
                                    3,6,9 (3, 6, and 9)
                                    5:8 (5, 6, 7, 8)
                                    3,5,7:12 (3, 5, 7, 8, 9, 10, 11, 12)
                                 
                                - Only positive numbers 1-99 are allowed.
 
                                - You can also use the difficulty buttons to quickly set common number ranges:
                                    Easy: Numbers 1-9 (single digits)
                                    Medium: Numbers 1-12 (up to 12)
                                    Hard: Numbers 10-20 (double digits)
                                    Extra Hard: Numbers 20-99 (large numbers)
                                 
                            
                         
                        - Decide how many questions you want to answer.
 
                        - Click the Start Game button.
 
                        - For each question, use the on-screen number pad to enter your answer.
 
                        - Press Enter or the green button to submit your answer.
 
                        - Try to answer as many as you can before you run out of lives or time!
 
                        - Review any missed questions at the end and try again to improve your score.
 
                    
                    
                        Tip: You can also use your keyboard to type your answer and press Enter!