Dissidia FF 012 would be better because it's the sequel to Dissidia FF. It includes all the characters Dissidia FF has and more, as well as new costumes, new stages, and the ability to play as the Chaos characters in story mode. Dissidia only let you play as the Cosmos characters in story.
Dissidia is the first FF game of its kind. There are no other games like it in Final Fantasy franchise.
Battlefield Heroes?
no
Unfortunately, no. The Japanese games would have to be manually programmed to support English, and very very few are. The Pokemon games, for example, do not have English translations in them.
Multiplayer games are games that you can play with other people
no. Nintendo dsi are region locked. that means that if you buy a Japanese dsi then it only works with Japanese games
i have a ps3 in my opion multiplayer games are off this planet
yes any language games
yes but the language isn't translated
No one but Nintendo knows...
At the moment nowhere. Touhou is only available officially in Japanese.