Final answer:
To add more games to an SNES Classic Mini, one popular method used by enthusiasts involves installing custom firmware using a program such as Hakchi2, although this may void the warranty and has legal and technical risks.
Step-by-step explanation:
To add more games to your SNES Classic Mini, the official method proposed by Nintendo doesn't exist as Nintendo doesn't offer a way to legitimately download additional games or expand the SNES Classic library. However, many users have resorted to installing custom firmware to add games to their SNES Classic Mini. This process, known as 'modding', typically involves using a program like Hakchi2, which can add games to the system through a connected PC. It's important to note that this method could void the warranty and potentially damage the system if not done correctly. Moreover, using copyrighted game ROMs without owning the original copy of the game may be illegal, so it's essential to proceed with awareness of these risks.