The best replacement for factories is fixtures.

The best alternatives to factories are rated as following:
★★★★★  fixtures
★★★  factories
★★  farms
★★  industries
★★  non uaw factories
★  mills

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Speaking about factories, one probably shouldn't forget about air pollution.

Other search terms related to factories and their ratings are:
★★★★★ air pollution
You have in mind a companion for factories and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of factories in all years. Click on graph for more.
factories
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factories