Infinifactory Build factories for your alien overlords

Every level gives you inputs that spit out parts and an output that wants a finished product. Your job is the space in between: conveyor belts, welders, sensors, pushers and cutters, all placed on a 3D grid from a first-person view. A new product might need two blocks welded into an L, or a missile assembled from a dozen pieces, and it is on you to route everything so it arrives intact.

The rules are few and taught one tool at a time, but the parts have real volume and real physics, so a welder that fires a half-second late turns your product into scrap. When a run works, you watch ten perfect copies roll through the scanner, and it is oddly satisfying to watch a machine of your own design hum along without you.

There is no single correct solution. Levels are wide open, and a factory that works is a factory that works, however ugly it looks. That freedom is what makes the histograms addictive: finish a level and you are scored on speed, blocks used and floor space, then shown how everyone else did. Seeing a friend's bar sit far below yours is a very effective motivator.

Since every metric is tracked separately, you can return to old levels with new tools and rebuild for a cheaper, faster or tighter design.