Portal 2

Portal 2

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!
Browsing: Collections
Containing item: "Countdown to Extinction, Part 1"
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Countdown to Extinction
Collection by mucusSTfriend
This is a collection of maps with increasing difficulty. Compeling visuals, challenging puzzles.
Countdown to Extinction (Director's cut)
Collection by jk7201
This is a special version of the Countdown to Extinction collection. It contains the original maps plus some extra stuff. The difficulty increases as you proceed, so following the suggested map order is highly recommended.
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