All characters, cutscenes, and 9999 shop points
At the title screen hold L+R and then press Up, Down, Right, Left, X, B, Y, A.
Hidden modes
There are five gameplay modes that are hidden which includes: Non-Stop Fever, Excavation, Giant Puyo, Ice block, and spinner. To unlock these modes keep purchasing the item in the fourth tab of the shop until you unlock one of these modes. You must unlock all five individually this way.