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Moment for Momentum

A series of small test chambers designed to introduce basic air strafing and flingex/thrust fall or whatever you want to call the technique where you do that repetitive thing to get more fling. Can be finished under 10 minutes*, possibly even 5 depending on your level of experience.
* for the first 4 basic chambers, the advanced chambers will take a lot longer.

However, once you have finished the main course and obtained the Aperture Science Handheld (dual) Portal Device you have the option to either head straight to the exit or try to locate the more advanced testing tracks and have cake for dessert together with your old best friend, the companion cube. The choice is up to you.

These tests don't require any of the more advanced technigues like bunny hopping, wall climbing, cube throwing etc but may require you to do things that make you wonder if you are solving them unintended. IMO, if you can make it to the exit (with cake and optional companion cube) than you've passed the test. Just have fun!


update: October 14, 2025:
- replaced the doors in the hall (advanced section) with more suitable ones and replaced their invisible triggers with buttons.
- added indicators to chamber doors.



note: I encountered a bug that might be unrelated to this particular map and never happened before on previous plays. In the last chamber of the advanced testing tracks (the one that requires 2 cubes to open the door) there is an angled panel mounted on the ceiling. For some odd reason this panel did not want to accept a portal. I managed to get around it by making a (quick)save and restarting the game. However, after getting into the exit elevator it didn't go to the end (voting) screen anymore. YMMV