Making a Game Boy game in 2017 - A Sheep It Up! Post-Mortem
This post is the first in an excellent series of two where a guy details how he made his own Game Boy game in 2017. And put it on an actual cartridge!

Impressive work, well worth a read.

Building such a game with modern(?) tools is still hard and I’m very humbled by the achievements of the game devs of yore. I’m on maximum impostor syndrome right now.