2001 is rightfully remembered as a benchmark year for video games. Grand Theft Auto III laid the blueprint for the now-ubiquitous open-world genre; Metal Gear Solid 2: Sons of Liberty served peerless stealth action primed for the post-truth era; Ico delivered a mythic fairy tale to rival those of Studio Ghibli’s. These are disparate games, yet each one saw its respective makers pushing toward a common goal — namely, figuring out how 3-D space (which arrived five years...