tight tight tight!!!
Good stuff

Very good puzzle, i loved the last part where you need to figure out how to get to the exit with all the cubes. Also the little use of no elements genre was quite nice. Definetly the best in the series.

8.4/10

I legit got to the exit door in the past and it wouldn't open..... had to come here to read someone pointing out map title.

ooo the light bridge was a mislead!!! love

The light bridge isn't even needed. Very fun map

I can recommend @SethDufrene's solution

Great map! The title is a big hint. Thanks

last one is hard

Last part is a bit of roll-of-dice.

Clever, wouldn't have solved it if people didn't hint to the title.

Great map really good challengeing puzzles and the map looks great . i needed use a trick with one of the boxed in the last part, had a hunch and it worked,

very nice map

Best as allways!

I had to put it down for a while because I really couldn't figure it out the first time. The title of the map is a pretty good hint on how to solve it. Probably the longest time ever for the aha moment to still work without the map getting aggravating.

Wow, I was stumped. Now I get it! The solution was even in the title!

Not as good as part 2 IMO, but still a really good and difficult chamber. Wish there were more!

Really creative. The last one had me stumped for a bit, but I figured it out.

Raely nice one again. Did'n use the light bridge.

Thanks for makig a level thats un-beatable. I can see what to at the end, you have to lanuch yourself into the air from either of the 2 faith plates, and use the light bridge to stop you from overshooting the ledge where the exit door is. BUT, because there is a fizzler at each end in the "past" and there no way to avod them, that means any portals you made will be erased as you go through, so bye bye light bridge, AND theres NO way ANYONE could shoot 2 new portals in the short amount of time you're in the air AND at exactly the right place needed to place a fresh light bridge in your path to stop you from overshooting the exit. As for in the "present"... well the fizzlers are gone BUT now there's water at the bottom and you can't portal onto water!

How to make a rain which you have on this map? please write in a personal chat.

How to make a rain which you have on this map? please write in a personal chat.

Gameplay Español
https://www.youtube.com/watch?v=pSRNMItKRQo

At the moment I realized that you had to gain momentum in the past to shoot out of a portal in the present , I had the giddiest expression on my face for a solid minute. This was an excellent and creative series of puzzles, and it required me to think with portals in a way I never had before.

I took ur Advice Neon and it worked (Although it took me about a few tries but i did it

The actualy solution is very cool, the way how I did it was super cheese. I just held the cube out in front of me and let go of it when I stepped on the aerial faith plate. the cube moved at a slower speed than me, and I collided with it halfway through the jump.

Nice map bud. Last solution got me thinking a couple of minutes. I love when maps getme to that point. Liked a lot the concept of time travel.

Really nice use of a new element; portalling back between past and future (or, as I now call it to avoid breaking my brain, shiny and ♥♥♥♥♥♥) works well, though I'd like to see touches like connecting some trigger states in the past to the future but not the other way, so it feels like you're genuinely changing the past (not sure if it's possible to e.g. link turrets so X dies if Y dies but not vice versa).

One note with this one - it's actually possible, though difficult, to get to the door without using the cube as intended in either the past or future chambers, by just scraping underneath the lasers. I made it first time just jumping into the pit in the future chamber and falling out the side in the past chamber, which made me think I was missing something as the light bridge hadn't come into play and there wasn't a 'collision'. I wasn't able to replicate that jump with subsequent tries though, so it's obviously just a few pixels difference.

Very very nice suite. I love all, except the end of the third, a bit difficult.
Thanks

final part of puzzle is easy for who completed co-op campaign

I have passed it in using other way. It's possible getting on the platform though a portal that link the floor of the "past" chamber with the lateral of the "modern". If you create the lateral portal down enough, you can avoid the red laser .

another portal 3 idea :D valve pls

Very good. I didn't figure out the intended solution, that was very original, but did it through a less elegant method.

that last part was brilliant. No so for me because i couldn't figure it out

Well done map. Finished in 3 minutes

This series was very well done. Not only did you factor in a new mechanic, but the test chambers were brilliantly designed too. This is exactly what the Pepertual Testing Initiative was created for :D

spoiler! just read the title

Attention : SPOIL !

Collision, well named !
I admit my brain was boiling at the end, before reading attentively the title
Nice map and clever.
Thanks !

Nice!! A very interesting challenge.... Had me thinking for a good while. Thanks for a map well done and great visuals too!!

Nice map, well done. The last jump with the cube borders on the edge of pure luck!

Managed to get to the door in the non-overgrown time.

I didn't even think about using the cube to block my flight in mid-air, because I swear in other maps I have caught cubes in mid-air and kept flying. Maybe the physics on these things can be changed?

Прошел вообще нестандартный способом)

I finished it a different way without the cube block. Just portal high above the spring board in later room, and jump off the bridge or edge in the older zone.

oh, that flight block in-air was absolutely awesome. thanks for this great map, it's been a while since I don't feel this much challenged!

Wonderful

AWESOME

Ohhhh that's a good one.

I was stuck on the ending for ages - scratching my head. Then I died, and saw the map title while it was reloading. Thanks for the hint

Also, as Risona noticed, the bridge was a redundant element. Those couple of issues aside, the test is great.

I got trapped behind the laser field (clean area, where the cube drops).