Battle system (This is how the battle system might look like)

Flowey the flower

Core Frisk

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Dusttale Sans

Underworld Frisk

Sans at the battle

(I'm back) In order for lv 21 and above to be of some use, I decided to add "Upgrade Cards". This will allow you to choose what you want to improve, but each card has a limit (that's the downside). They will only appear when you raise lv 21 and above.

Underfell Sans

I decided to update the design a little: warp zone (But this may change)