The NES tier.

A museum of 8-bit, 16-bit and 64-bit games the Code Factory builds to learn from. Every cabinet is console-shaped — a NES palette of 54, a Super Nintendo's 32,768, or a Nintendo 64's flat-shaded polygons painted back to front, a synth, a pad — has at least ten levels, and every level was solved by a bot over the real physics before it shipped; what each bot's losses taught is written down and filed to the factory's brain. Dungeons, dragons and chests that bite. No modern world, no pop culture, nobody you know.