You can now download Dragon Ball Z: Extreme Butoden demo on 3DS eShop. This demo is released first in Japan. This demo features a few bunch of characters that you can play with. I had given you the list below. If you are playing the demo, then you can still use your save game file to unlock a few characters of the game. This include Super Saiyan God Goku and Super Saiyan Goku. This can be played on the full game also. You can find the game on Nintendo eShop.
Dragon Ball Z: Extreme Butoden Character List:
The Great Saiyaman
Dragon Ball Z: Extreme Butoden is an upcoming fighting game which is set to relapse somewhere in the month of June this year. It mostly targets a competitive gameplay of famous fighting character on 3DS. It is a 2D fighting game. For those who are having a 3DS will surely enjoy the gameplay. The demo version will give you the above characters to play up to 5 stages. If you had unlocked any characters in the game it is possible to get that in the full game by using the demo save game. There will be more characters in full game. It is assumed that there will be total 100 characters in the game. Among this around 20 to 25 might be playable in the demo. But it is not completely clear. Also you can get the demo via QR code from here.