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Community maps. For science.
Welcome to Aperture Laboratories, home of the Perpetual Testing Initiative. Easily create, share and play test chambers authored by and for the Portal 2 community. Do your part! Contribute to Science.
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![DarkBro COOP [Chamber 7]](https://images.steamusercontent.com/ugc/10285619936594741893/76305D4126374CE5C1C4A71410CC6E1E287F19C3/?ima=fit&impolicy=Letterbox&imcolor=%23000000&imw=288&imh=162&letterbox=true)
![DarkBro COOP [Chamber 4]](https://images.steamusercontent.com/ugc/16832357685669438870/48BCCA55306835AFB6D7E5510D63D3E264C12874/?ima=fit&impolicy=Letterbox&imcolor=%23000000&imw=288&imh=162&letterbox=true)
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