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Persistent Data (undertale.ini)

Things that UNDERTALE remembers throughout multiple playthroughs

General
Omega Flowey & Other

SAVE Data (file0)

This is what gets SAVED at SAVE points

General
Stats
Inventory
Cellphone
Ruins
Snowdin
Waterfall
Hotland
Other
FUN Values
Value Effect
2-39 Wrong number
40-45 Sans' call
46-50 Alphys' call
56-57 Nightmare mode
61-63 Gaster followers
65 Sound test room
66 Fake hallway
80-89 Clam girl
90-100 Goner kid