1. Multiple sounds and melodious music.
2. Automatic power-off function is available.
3. If no key is pressed within one minute, the gamer will enter sleep mode automatically.
4. Press yes/new game key to start the game after power on or reset.
5. For the first question, player can use left side key and right side key to select classification of the object, the ey to confirm the answer.
6. After classification of the object is confirmed, continuous question will be asked.
7. Player needs to answer "yes", "no", "sometimes" or "unknown" honestly according to the questions.
8. After having asked 20 questions, the game will try to guess what the player is thinking of.
9. If the guess is correct, press yes/new game key to confirm, If the guess is wrong, press no key, the game will ask five more questions and then guess again.
10. When figuring it out, the game wins, if failing to figure it out, the player wins.
11. After the game is over, player can press yes/new game key to start a new one, or press no key to turn the gamer off.
12. If no key is pressed within one minute during playing or in standby mode, the game will automatically enter sleep mode. Press yes/new game key to wake it.
13. The game will resume current game playing mode after yes/new game key is pressed.
14. The game will return to standby mode after yes/new game key is pressed.