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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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Containing item: "Beginner's Journey"
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RectorRocks' PTI Maps
PTI maps made by RectorRocks. Branding image : PTI banner image. Background image : Portal 2 waterfall wallpaper. Difficulties: 1/10: Very Easy 2/10: Very Easy-Easy 3/10: Easy 4/10: Easy-Medium 5/10: Medium 6/10: Medium-Intermediate 7/10: ...
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