
after they've done so, you should be able to see them in the multiplayer preparation room of the game. players who want to play with you should copy and paste the host's IP to their "proAdhocServer IP address" as well. In game, go to multiplayer(when you go to multiplayer for the first time, a window for firewall may pop-up.Simply check "Private networks" and "Public networks" and click "Allow access.") Under Controls -> Control mapping, don't map anything for "Unthrottle" or "Speed toggle" to avoid using them,don't map anything for "Save State" or "Load State" as well. > Emulation make sure "Fast memory" is NOT ENABLED. Under System -> Cheats, make sure cheats are NOT ENABLED. Below that, click "Change MAC address" to generate a random MAC address that won't match other players' MAC address. Below that, click "Change proAdhocServer IP address" and paste host's IP. From PPSSPP.exe, go to Settings -> System -> Networking and "Enable networking/WLAN." The game code should be whether ULUS10391 for version, ULES01213 for version, or ULJM05500 for version. Make sure the game region is THE SAME FOR ALL PLAYERS who want to play together. If you decided to host the game, right-click your own username instead to copy your own IP. ( If you want to connect to a certain player with a red X beside his name, one or both of you needs to port forward Tunngle. Make sure to connect to someone WITHOUT A RED X BESIDE HIS NAME. From the right section, pick the player who is going to host the game and right-click his name and select "Copy IP to clipboard." In the search bar at the top-left corner, type the title of the game you're going to play,after that enter one of the rooms that appear from the middle section. To have the smiley green or yellow, you need to port forward Tunngle. Make sure the rectangular smiley at the bottom-right corner is GREEN OR YELLOW. Run tunngle,click the yellow bar to register an account, login your created account at the bottom of the window

Tunngle - Download Tunngle from here and install it. Make sure, though, that the build is STABLE AND WITHOUT ERROR

Ppsspp - Download PPSSPP from the official website or from buildbot. Hi i found & share this tutorial for those who still want and like playing psp games online ,the tutorial is copied from the ppsspp forums, check the original link for more explicit info
