You start with a $199 Ender 3 and 1 kg of PLA. Customer orders roll in: phone cases, dragon figurines, drone propellers, cosplay helmets, jewelry castings, surgical implants, $30k aerospace brackets. You assign each to a printer and watch it actually print in 3D — the model grows out of the bed in real time while the gantry rises with it.

Make money. Buy real printers — 26 of them, real brands, real prices: Bambu, Prusa, Voron, BCN3D, Markforged, Formlabs Fuse SLS, EOS metal SLM at $700k. Buy materials — 39 of them, from cheap Sunlu PLA to PEEK to Inconel 718. Swap nozzles. Service your machines before they wear out. Sell old printers used at depreciated value. Climb the tier ladder from garage hobbyist to industrial print farm.

The whole thing renders in real Three.js with PBR lighting, glowing LCD screens, brand-colored shells, and animated print heads.