How to use ROM Memory Banks

Banking is a slightly advanced topic. It gives the developer the ability to create larger and more complex games.
Parallax backgrounds with GBDK-2020

If you look out into the distance, and move around, you’ll notice that objects closer to you move slower than objects further from you. This effect is called “Parallax”
RPG Style movement in GBDK

RPG Style movement in games let the player move in 4 directions. Some Gameboy games like Pokemon Red & Blue confine you to a grid. Alternatively, games like The Legend of Zelda: Links Awakening give you near complete freedom to move . In this tutorial you’re going to learn how to make a character move around and face in 4 different directions.
PNG2Asset graphics creation for gbdk-2020

GBDK-2020 comes with a lot helpful tools. One of my favorite is called png2asset. This tool takes in a PNG image and converts it to file formats you can use with GBDK-2020.