MAMEWorld Forums - The Loony Bin - Re: PSP & PS2 games that used 'cross-system connectivity'?

> The only other thing like this that comes to mind was the ability of the NeoGeo
> Pocket to connect to the Dreamcast, with a few games that award you content depending
> on what you've done or won in the other version/port.

I don't know of any other examples with PSP/PS2, but I can think of other examples cross-system and cross-game connectivity:

Transfer Pak let you take your Pokémon teams from the gameboy games and let them battle in Pokémon Stadium on N64, and unlock a minigame in Pokémon Yellow
Transfer Pak let you take your Mario Tennis and Mario Golf teams from the GBC versions to the N64 versions of the games
GameCube/GBA link cable let you transfer trading cards between versions of All Star Baseball 2004
GameCube/GBA link cable lets you transfer Pokémon between GameCube and GB(A) Pokémon games
Smash Bros for 3DS and Wii U will communicate wirelessly allowing you to transfer customised fighters and use the 3DS as an additional controller

And lots more I can't be arsed listing. The GCN/GBA link cable is the closest to a direct equivalent the the USB cable for PSP/PS2, but the 3DS/Wii U wireless link is conceptually close. Transfer Pak is a bit different as it involves an adaptor allowing you to connect the GB media to the N64 without a GB being involved.