Can PSP Go Connect to Older PSP Models for Multiplayer?

Yes, via Ad-Hoc (local wireless) only. There is no cable link between PSP models.

How It Works

• All PSP models (1000, 2000, 3000, Go, Street/E1000) support Ad-Hoc mode (IEEE 802.11b direct device-to-device).
• Both players must own the same game (UMD or digital) that supports Ad-Hoc multiplayer.
• Enable "WLAN" switch on both units → enter game's Multiplayer/Ad-Hoc menu → one hosts, other joins.

What Doesn't Work

• Infrastructure/Online: PSP Go cannot use the old PlayStation Network ad-hoc lobby service (shut down 2016). Use ProColdbird / XLink Kai (PC software) to tunnel Ad-Hoc over internet.
• Remote Play (PS3→PSP): Removed on PSP Go; only PSP-1000/2000/3000 supported it.

Popular Ad-Hoc titles: Monster Hunter Freedom Unite, Gods Eater Burst, Dissidia 012, Gran Turismo PSP, Tekken 6.