Dragon Ball: Heroes is a Japan only arcade game that is known for having very interesting characters as well as forgotten one’s like Gokule (Fusion between Goku and Hercule) and even exclusive characters that have never been playable in any other Dragon Ball game.
The latest Weekly Shonen Jump contains some interesting news on transformations. Players who obtain the HJ7-SEC Son Goku GT as well as the HJ7-SEC2 Broly card will be able to transform from Super Saiyan 1 to 3 and 4 for the the first time in the series.
Once players transform into Super Saiyan 3 form, they will have the chance to reach Super Saiyan 4 in the next round.
Dragon Ball: Heroes is only available to play in Japanese arcades. Two Dragon Ball: Heroes 3DS games for it exist but the cards do not go past HJ3 and it doesn’t allow 3DS players to execute a double transformation.