lovely. but that last part was hard

Solution:
https://youtu.be/pc6EMB_Jw1o

Another high quality map by BEN! 👌

I thought the same as @Teo, but once I walked into the map, I was sure I'd played it before. However, I have no idea why I didn't comment and back then. Anyway, great puzzle, definite intended solution ? One move, in the second chamber, had me stuck for a while and that move is probably my favourite out of several good moves in this puzzle.

Very, very nice.

Wow! I somehow missed this one being published, and I'm so glad I spotted it today. The gel progression is incredible in this puzzle! It took me some thought, and I was so excited whenever I spotted the next step in the sequence. Great work as always.

грок прыгать грок голова стучать об кнопка

Solution: https://youtu.be/SMKkUxuAVfs

What a fun map!

Thoughts with blindrun and SPOILERS! [telegra.ph]

TLDR: Glad to see you brought back the first half of Underground P4, a bit disappointed the second half wasn't the same but you replaced it with an excellent puzzle. My only nitpicks would be the lack of a hint of where to look up in the first part when you're down below and need to get back up and the button for the blue gel being tucked away in the second area. I'm also sad the second puzzle was apparently made easier due to the inability to fix an unintended solution, but no biggie.

Pinging @BEN 77 so they see this -- please, please, please if you still have Underground P4&5 reupload them. I really miss those maps and I think the newer generation of P2 players deserve to experience them (or people who just missed out anyway). Or, if anyone has them backed up send them to me.

Difficulty: 3.75/10
Enjoyed: 7.75/10

Interesting idea of having a platform with blue gel be moving. Completed in a bit over 10 minutes

fun! I thought the final move would be more involved, but thankfully it came together rather simply. Still very satisfying. thank you for making!

Great map. I played the one cube version. Spent some time but Canticle's clue put me in a position to finish. Spent 2 hours on my first run through then repeated it in about five minutes.

I overcomplicated that first part for way too long. Great test

I remember the first part was from an older map you created called Underground part 4. Don't know why you deleted that one though, I enjoyed it.

One thing I realized playing portal 2 is that obsessing does not contribute anything to the solution. This happened so many times: I was stuck at a point and tried hard for long to no avail. I quit and came back later with a fresh mind and BAM! I get the solution in a short time.

For this map I had to quit and come back for the 3rd time to see the solution. The trick to getting the cube to the other side is getting orange gel inside the room where the cube flips the panel, opening a portal inside there and one in the flipping panel

@marknrobbins from what I see in this walkthrough video @Ben77 had this map with 2 cubes before, but upgraded it. https://www.youtube.com/watch?v=4X8urQRJTFE

However I am stuck too. Cannot get the cube out to open the final doors ;)

Excellent!!! Thanks

great map, but Im stuck.. and whats the talk of second cubes?where does the second cube come from..?.. walkthrough??

excellent! I've been playing a couple of your maps and they are all gorgeous and designed really well which makes them a lot of fun to play. This is the first one that got me stumped for a bit but the layout pointed me towards the solution.

Loved it. Your puzzles are like poetry, I don't think anybody does underground quite as well.

my brain is broken

Clever map with some nice subtle changes in puzzle state. Thumbs up.

Stuck for the longest time! Doing a speed jump from the exit area through the fizzler seemed so pointless...you lose the portals you need to keep ...but it makes all the difference for the position of other elements. So cool when I just did it, despite it "seeming" pointless and suddenly one of the 3 possibilities that I had been trying to figure out how to do became possible. Great feeling!

great puzzle

It seemed impossible for so long, untill it didn't. fun one!

Awesome!

Very fun puzzle, satisfying to solve, beautiful graphics. As usual.

Glad to see you're still making new test chambers years later. Both solutions were fun.

Another one of those maps in which you create your (gel) solution step by step. I like that!

very nice map

Great map, really enjoyable!
By the way is it possible for you to re-upload Underground Part 4 & 5?
Thanks

I downloaded your older version a couple of weeks ago and really enjoyed the challenge using the 2 blocks. Your recent update to a single block in the final room certainly makes the map easier but also less challenging. Also liked the graphics. Thanks.

This time excellent puzzle!The slight change of the fling staircase and the elimination of cube swapping makes the map more intricate and logical.While playing I also enjoy the nice visuals and layout，which is really satisfying to enjoy.Big thumbs up and hope to see more from you.You’re my favourite map creator indeed.

Update - now only one cube.

I believe i solved it in an unintended way considering past comments said you're not supposed to swap cubes to solve it.
I placed some orange gel in the room on the left after swapping cubes (so that on the left room there was the other cube) and then used that orange gel to fly to the exit while still having a portal inside the left room with the swapped cube. So in the end i just had to recreate the cube there and take the swapped one.
Was it intended?

Awesome!

Why not? It will be interesting.

Hi Ben,,,,,,,,how are you...........id like to know if i can REMAKE the 2nd half of PROPULSION in my way.....it would look totally diferent than yours of course but retaining GAMEPLAY...
let me know so i can send you the link to the map..

If you jump while flinging to get into the chamber, it sends you over the catwalk completely. Maybe the catwalk should extend to the wall so that this can't happen.

Un puzzle muy bueno

The king is back!

Very fun chamber! I really loved the map work and the puzzle itself.

Very fun solve and great aesthetics.

Great puzzle (again).

A very entertaining chamber!!
I, too, initially swapped cubes only to realize afterward that it wasn't needed. :))

So sorry, this unintended solution. Fixed this...maybe

Well……this one's a bit straightforward,I think,because the only thing you can do is cube swapping.To be honest,the original version “Underground.part 4” is better.

What a treat! A Ben77 chamber!

Классно!