character.png is licensed under CC-BY 3.0 
original version can be found at https://opengameart.org/content/tiny-16-more-character-animations
authors: Lanea Zimmerman, Clint Bellanger, Charles Gabriel, basxto

floor.png is licensed under CC-BY 4.0
original version can be found at https://opengameart.org/content/tinyslates-16x16px-orthogonal-tileset-by-ivan-voirol
author: Ivan Voirol