Sorry for a late reply! Some good starting pointers: https://www.gamedev.net/ https://www.gamedev.net/ https://www.reddit.com/r/gamedev/ https://www.reddit.com

Sorry for a late reply! Some good starting pointers: https://www.gamedev.net/ https://www.gamedev.net/ https://www.reddit.com/r/gamedev/ https://www.reddit.com/r/gamedev/ https://www.reddit.com/r/truegamedev/ https://www.reddit.com/r/truegamedev/ Some interesting case studies are anything by Id Software (Quake etc), and Lineage (that's mostly tales of a friend who is a hardcore player and a developer; he'd have the relevant source code open in a separate window while playing).