In the original PSP hardware, "Ad Hoc" was a short-range Wi-Fi connection between handhelds. PPSSPP replicates this by using an as a "virtual switchboard." Instead of searching for radio signals, the emulator sends data packets to an IP address (the server), which then routes them to other connected players. Connection Methods
If two instances of PPSSPP absolutely refuse to see each other, they might have the same virtual MAC address. Go to > Networking > "Change Mac Address" and generate a random, unique MAC for each player. adhoc server ppsspp
Note: Running two instances of a game will tax your CPU. Lower the graphics settings and frame rate (VSync) to keep things smooth. In the original PSP hardware, "Ad Hoc" was