Just recently (July 29th) there was a DS game released which is a port of the arcade game Ganbaride. If anyone here has a DS, I suggest checking it out as its a pretty decent kamen rider game.

The game features an impressive roster of riders with over 700 cards to unlock and use. Many are repeats of riders but with different stats and sometimes finishing move animations. For example, there are quite a few Decade by the second edition already and they have various stats, finishing animations, and change what weapon he is using in battle. Another bonus is that game play is setup with using two riders at once, so you can make some pretty awesome rider tag teams. My current favorite is Den-O Sword form teamed up with Den-O Nega form.

The biggest drawback to getting this game is that it is Japanese of course, which means if you don't know the language you'll not understand any of the story mode or what many of the cards might do. That and it costs more to buy DS games from Japan. There is however some help to understanding cards and the game itself isn't hard to figure out even without help. It requires luck a bit more than understanding.

If anyone is thinking of getting the game or is playing it now, feel free to discuss it here or ask for any help. I don't know Japanese but I've figured out enough of the game from various places online and playing it a bit myself.