Hello And Welcome My Good Devs To The Old Switcharoo! 

Here You Will Be Taking 2 Characters, And Putting Them In Eachother's Universes. (As I Explained In The One Line Description) Examples Being: Mario In Link's Universe, And Link In Mario's Universe!

Now Since This Is My First Jam.....Im Not Good At Explaining This So.....Good Luck!

(I Tried With The Thumbnail.)