Japanese	American	European
You know that the titles are different already, I hope. The copyright years are different since the Japanese version was released earlier than the others. The American version has the blue in the logo and the text at the bottom is slightly lower down. I have no idea why the European version is missing the blue, but it is probably because this version was rushed (to my knowledge it was out before the American version...see below).

Japanese	American	European
The American and European versions have 2 difficulty settings: normal and hard. The Japanese version has those but it also has an "easy" setting and if that wasn't enough, a "very easy" setting! Strangely the Japanese version also has the English version logo in the background of the options menu. The background is also in a slightly different place.

Japanese	American	European
The Japanese version spells "Waiting" incorrectly. This was corrected for the American version, but is still in the European version.

Japanese	American	European
The Japanese version lets you continue as many times at you want. But the American and European versions have credits, giving you only 2 chances to continue.

Japanese	American	European
In the VS. mode, the text displaying wins is different in each version. Also, on this stage, the smoke around the floor is animated in the American version, but doesn't move in the other two versions.

American	European
There are some differences between the text in the American and European versions. The American version has less spelling errors.

American	European
After defeating King, her text flows fine in the American version, whilst it doesn't in the European version.