I'm not really sure what it's supposed to be - remake/expansion or 3D port, I hear both but nobody's really answered ...
I'm pretty sure it's just 3D port though. Either way, yeah, 20 bucks is definitely worth it.
My brother's got Pokemon Rumble Blast, I haven't played it yet though, I hear it's just Pokemon Rumble but longer... take that however you will.
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