First of all, for anyone still wanting to download this DLC, you can get it for free on Steam by hitting the "Install" link on THIS PAGE: https://steamdb.info/sub/32032/
Alternatively, it's available as a paid DLC for Portal 2 on PS3 using the PS Move, which is how I played it, thus the short playtime recorded here.
Portal 2's Perceptual Pack, also known as "Portal 2: In Motion", is a DLC expansion pack for Portal 2 that adds 7 new single-player test chambers to play through. In addition to the new way to control the game, it adds new gameplay mechanics such as "portal surfing" (rotating and moving already placed portals), "one-to-one" (moving the held item without moving the player or camera), and the ability to squash and stretch a specific cube-type which has multiple clever uses I won't spoil here. Unfortunately, I can't review the multiplayer as I don't have a second Navigation controller but it claims there is a multi-player component.
In terms of the quality of the chambers themselves, most of them are tutorials for the new mechanics. That's not inherently a "bad" thing per se, portal 1 is almost entirely tutorial, but it means that once you've gotten past the first half of the chambers, there's barely anything to do afterwards. I will say this, some of the puzzles were REALLY clever, having that "ah-ha" moment when it finally clicks, but the introduction of new puzzle elements just to use them once or twice leads to the pack feeling really short and lackluster. I beat all 7 chambers in what felt like 20 minutes and was definitely no more than 30. Now, I AM a portal veteran, having over 130 hours between both games, 100% achievements on Portal 1, and an unknown amount of time spent on various mods and external lore, so it's possible that less obsessed fans would get more out of the pack, but the absurd price of the proprietary Sixense camera at $199.99 MSRP for a 720p webcam and the $10 price tag for the DLC on PS3 really makes the pack seem like a terrible deal no matter how you look at it.
Would I recommend it? Yes, it's a decent enough level pack and officially licensed by Valve, so it's the closest we've got to a Portal 3, but I'd only recommend it for those who already have the PS Move as playing through the PS3 has decently responsive controls, especially for aiming, but I'd have a hard time recommending ANYONE go out and buy a Senz3D webcam as I cannot confirm the ability to play through the main campaign on PC with it, though it seems unlikely given the separation of applications.
What I really wish for, is just more chambers. The tutorials setup some great mechanics, you just need more time to appreciate what these new elements could lead to. Given modders have found a way to use Portal 2 on PS3 to side-load BSPs, I'd love to see some fan-made maps with these new mechanics in mind. Though it's over 10 years since this released and it's unlikely anyone even remembers the thing.
