Some of my favorites:
The storytelling in Undertale’s combat system – An a analysis of how Undertale uses the combat system to tell stories.
Improving your team’s productivity by being a Lazy Programmer! – Some tips on programming productivity.
The Secret of Monkey Island has the perfect combat system – Something about combat systems and Monkey Island’s insult sword fighting.
Que Fase – Quake E1M3 The Necropolis – A video analysis of level E1M3 of 1996’s Quake (turn subtitles on if you can’t understand portuguese).
More at:
Gamesfoda (portuguese only)