How do you play psp go games that are on a different account?

To play PSP Go games that are on a different account, you need to log into that specific PlayStation Network (PSN) account on your PSP Go. Ensure that the games are downloaded to the device from that account. If you want to use a different account, you'll have to deactivate the previous account and reactivate the new one, but note that games purchased on one account cannot be played on another without re-licensing. Additionally, you may need to connect the PSP Go to a PC with the appropriate software to transfer any necessary files.