Assembly Line: Factory Builder [🛢️Oil Era]
A Roblox experience owned by Flatworks.
SimulatorENfactory automationresource managementmultiplayer
Description (written by the developer; not a statement by this register)
Assembly Line is a factory automation builder. Mine ore with drills, carry it on conveyor belts, smelt it into plates, and let robot arms feed your machines, so every line you build keeps running while you plan the next one. Start with one drill and one furnace on empty grass. Add drills, split and merge belts, fix jams, raise steam power, and research bigger machines in the lab. Update 2, Oil Era: strike crude with pumpjacks, pipe it to a refinery and a chemical plant, and make plastic, sulfur and advanced circuits. Electric furnaces, modules, accumulators, pollution and scrubbers. Save any build as a blueprint and share it as a string. Build alone or open your factory to friends with a join code, and race the leaderboards. The camera looks down at a fixed angle, so your whole factory reads at a glance. Your factory saves, so come back any time. Join the Flatworks group for 1.25x factory speed. A new code every Friday on the home screen.
Last updated by the developer 10 Oct 2026, 21:17 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 12 Oct 2026, 03:15 | 2 | first reading |
Concurrent players at each of our measurements (insert-on-change).
Monetization — game passes
Game passes for sale and their prices, measured from the Roblox passes API. Developer products bought inside the game aren’t publicly listable.
Badge funnel
How many players have ever earned each badge — a proxy for how far players get before they stop. Steep drop-offs mark where a game loses people. Win rate is the past-day share of players who earned it; categories are assigned by a language model from each badge’s own name and description.