My freehand assets I created for my game Leonid & Swagger:Chapter 1, part of the OGA Spring Jam 2019. These are 4 color sprites used with game boy game maker kit GBStudio, which I used to make the game.

The tileset seen in the preview image was made by ArMM1998 and can be found here: https://opengameart.org/content/gameboy-tileset