quaternius_ultimate_stylized_nature from Quaternius
  https://quaternius.com/packs/ultimatestylizednature.html
  license: public domain
  support the artist: https://www.patreon.com/quaternius

Buildings and cars from Kenney
  https://kenney.nl/assets/retro-medieval-kit
  https://kenney.nl/assets/city-kit-commercial
  license: public domain
  support the artist: https://www.patreon.com/kenney

Sunny land image by Luis Zuno @ansimuz
  https://opengameart.org/content/sunny-land-2d-pixel-art-pack
  license: public domain
  support the artist: https://www.patreon.com/ansimuz