[djmips]

With only looking through the article and being a 6502/NES programmer myself, you can't escape having to know 6502 and the NES hardware to write a NES game. This Lisp is cool and it will certainly smooth the process and is a good fit for an Adventure game and other parts of NES game development where you aren't counting cycles (like UI).

[jasperpilgrim]

Good to know. Assuming it's true that 6502 asm is not too difficult to learn, co2 looks like it would be fun to work with on a simple game. Really neat project.

[djmips]

6502 is easy to learn. Have some fun here https://skilldrick.github.io/easy6502/

For me the challenge with the NES itself was getting a good tutorial and then with making a game, getting your art from your mind into the tiles and sprites and in your project. Your art 'pipeline'. Once that's established it becomes easier.