Kingdom Hearts: Birth by Sleep will be releasing in just over a month but some unfortunate news found on the Australian Playstation Website has fans a little dissapointed. Players were looking forward to the game's assumed online co-operative mode, the 'Mirage Arena', until it was revealed that the game will not be using any sort of online infrastructure.

Instead, the Mirage Arena will be restricted to the PSP's Ad Hoc Mode, that is to say that players who want to play multiplayer will have to be within 60ft of each other to play. It is not clear as to why the game couldn't use 'Infrastructure Mode' to allow online play for players wanting to play with friends around the world but this is the decision Square Enix have decided to go with.

All is not doom and gloom however, Playstation 3 owners will probably remember the Ad Hoc application on their PS3s. It allows any Ad Hoc enabled game to be played online using the PS3s very own online structure, with this in mind, players can still play online, they just need to own a PS3.

Thanks to GU Member RedRose for the news.