Marcus is a retired software engineer from Seattle who spent his career debugging games before the industry transformed beyond recognition. He writes with technical precision about the engineering elegance behind classics, from Z80 assembly language to Mode 7 scaling tricks, treating code like archaeological artifacts worthy of study. His articles are deep dives into why certain games pushed their hardware to breaking points, paired with the dry humor of someone who's actually shipped titles and understands the impossible constraints developers faced. For readers interested in the "how" behind their favorite games, Marcus is essential reading.