Critical Mode
Kingdom Hearts II Final Mix
Player takes double damage (compared to Standard).
Player deals 1.25x damage (compared to Standard).
Compared to Standard and Proud, Mushroom XIII deal 1.25x more damage.
Several abilities are granted on the third day (Reaction Boost, Finishing Plus, Draw, 2x Lucky Lucky, MP Hastera and EXP Zero).
Roxas's initial AP is 50.
AP increases by increments of 3 instead of 2.
Maximum potential health is 60 HP instead of 120 HP.
MP gains from Bonus Levels are halved.
EXP gained is 75% of the normal amount.
Save file displays "Critical Mode".
Must get the Gold Crown to unlock "Birth by sleep".
In the PlayStation 2 Browser screen, there is a symbol attached to the save data file on the memory card.