Original File Name, or Localized Name?

[puggsoy]

Generally, keeping the original names is fine if there's a large number. If possible you should try to organise them though, into folders or something.

For the submission names themselves (like game name or sprite/model/texture/sound), usually we like to keep English names. If the game is Japanese-only you can use the (romanized) Japanese name after the English name, separated by a slash (e.g. Kid Dracula).