1, complete the horror ice cream 4: You need to complete all the levels of the fourth generation and collect enough gold coins and sweets to unlock the fifth and sixth generations.

2. Unlock the fifth generation: After completing the fourth generation, you will get a password. This password will allow you to unlock the fifth generation. In the game main menu, select the "Enter Code" option, and then enter the password you obtained.

3. Unlock the sixth generation: After completing the fifth generation, you will get a password again. This password will allow you to unlock the sixth generation. In the game main menu, select the "Enter Code" option, and then enter the password you obtained.