For this tutorial, we will be using our Raspberry Pi and a programming language called Python to create our very own text adventure, with our own game world and some characters to inhabit that world.

Learn how to make a game in Python using the popular Pygame. You'll learn how to handle player inputs, draw graphics, and more.

Even if extracting NES game data is not your thing, the emulator concept [Matthew] uses might be still worth a read.