Quoted from Aurich:
Does the Groove Coaster work okay offline? I've been learning how to deal with all the Konami e-Amusement network issues if you want to use their cabs in the US and it's definitely a pain the ass. Seems like everything expects a network these days.
I have read that a lot of the newer games need to be hacked, but my Groove Coaster works fine without a network connection. I just set it to free play when I first got it, and it worked without any fuss. The only negative is that it's not hooked into the Japanese servers so I can't access any of the online content, save my progress, unlock stuff etc ... I don't think this is possible, even with hacking, but I could be wrong.
My game appears to be running the stock Japanese arcade software. I have seen some Groove Coasters at cons running a newer English version of the software with everything unlocked. If you know anyone who can help me with that, I'd greatly appreciate the lead.
I'm currently looking for a nice Jubeat, but they are pretty hard to come by over here.