A factory drawn as an engineering schematic. Mine ore, smelt it into ingots, press parts, assemble circuits, forge cores and refine prototypes across six tiers, with each machine feeding the next and the whole sheet laid out in blue line drawing. The tabs across the top are factory, research, mastery, exhibitions, achievements and stats, and they fill up in that order.
Prestige banks Schematics and opens a radial research tree. Push further and you publish for Patents, then exhibit for Legacy Marks, so there are three reset layers stacked on each other by the end. It is one of the more finished games in this catalogue, with a real interface and a genuine mid game, and it will hold you for an evening or two.