Water. Earth. Fire. Air. Long ago, the four nations lived together in harmony.
Avatar: The Last Airbender
Background music by GoodByte (https://freesound.org/s/442911/)
And royalty-free sound effects via the same website (https://freesound.org/s/456966/ & https://freesound.org/s/511484/)
To make the experience just that more pleasant!
Hugely inspired by the Little Alchemy game (https://littlealchemy.com)
And, of course, thank you for making the Swift Student Challenge a reality!