Oh, The Great Inflation...
HydroKirby tried to explain this whole thing:
Consequentially, everything appeared to "blow up" with more zeroes, but it's in response to this change.The point is that 1 FG = 1 yen which is perfect for the mobile platform. 1 FG = 1 DMM point keeps the value of the FG the same as it was before. But now 1 FG can be transformed from other currencies with minimal loss. For example, if I charged on the mobile platform, 100 FG = 100 yen = 90 US cents. With the old system, 1 FG would be 0.9 US cents which isn't feasibly buyable.