Solution: 🔄

This is the metapuzzle. Since the feeder puzzles don't have answers, this meta uses the feeder mechanics instead. This solution will, as a result, have spoilers for all feeder puzzles in this round. The twist is that each section takes data from the previous section and gives data to the next section (going clockwise, as indicated by arrows), making a loop where it's not clear how to break in (however, as this solution will describe, there are several decent break-ins). Each section also gives three letters.

Top Section

This section is an 8x8 grid of symbols from 🔲. Using the letter/symbol translation from 🔲, we get:

From the left section, we got a loop on the vertices of an 8x8 grid. We can overlay this grid on the 8x8 grid to separate it into an outside and an inside:

The letters outside the loop spell out READ CONTENTS INSIDE INSTEAD, which basically means to ignore them. The letters inside spell out TAKE THREE LEATTERS CODNTAINED IN STUCAK NODE, which is TAKE THREE LETTERS CONTAINED IN STUCK NODE with an extra ADA inside. (The word breaks in both of these messages have to be deduced from message content.) TAKE THREE LETTERS CONTAINED IN STUCK NODE is something for the next section (the right section), and ADA are the three letters we get from this section.

The top section can be broken into by noticing that there seem to be messages spelled out, and trying to separate them.

Right Section

Now, let's move to the right section. This section is three question marks (roughly white, blue, and black), and a dark blue oval. The oval may remind us of 🤫, and indeed this section corresponds to that puzzle. The three question marks make more sense with the TAKE THREE LETTERS CONTAINED IN STUCK NODE message from the top section; there is one node in 🤫 that is stuck in place (the rest can be moved around). This node is LIVESTOCK and the extracted letters are L (white circle), S (blue number), K (black circle), matching the question mark colors (also matching them in order). LSK are the three letters we get from this section.

The dark blue oval is darker blue than most of the nodes in 🤫, but one node (which connects to BODY PARTS, so most teams should have it unlocked even if it's not solved) is darker blue than the others and is the same color as the node in the meta. This node is 👀 which is used for the bottom section.

This is one of the easiest sections to break into. The letter extraction of LSK and emoji extraction of 👀 are independent. The letter extraction of LSK has a cluephrase from the top section, but you can also just notice the LIVESTOCK node is suspiciously stuck (often by revisiting the🤫 page and watching the web loading physics play out for all nodes but one), or notice that it's the only node with three letters extracted in white circle/blue number/black circle order. The emoji extraction of 👀 is not clued by anything but the color of its node/the color of the oval in the meta (and the similarity to the case of LSK of "here's a special node"), so though that makes it harder to get, it's also a good break-in.

Bottom Section

We now consider the bottom section. This section is "???___ ____" with "1 2 3 4 5 6" below it. It's unclear what this is at first, but the left section looks like ⚫ which means this must be 🌳.

The "???___ ____" seems like (and is) to extract the first three letters of something with enumeration (6 4); given how 🌳works, this is probably a Shadow the Hedgehog library sequence. The 👀 from the right section seems to be clueing something eyes-related. Looking, we find "Opened Eyes", which matches the enumeration, and gives us OPE as our three letters.

The "1 2 3 4 5 6" is then six things associated with the ending, which, thinking about how 🌳 worked, we realize are the six decisions made to get to the ending. In this case, they're Hero, Hero, Dark, Neutral, Dark, Hero. This is used for the left section.

This section is also a good break-in because there's only one Shadow the Hedgehog library sequence with enumeration (6 4), so looking through all of them will let you find this one.

Left Section

Finally, we consider the left section. This looks a lot like ⚫, except the circles are numbered 1, 2, 3, 5, and 6 (not 4) rather than being colored white or black. We might guess that circles with the same number have the same color, but even with that aha, we'll probably need to realize that circle colors are based on the 1 2 3 4 5 6 = Hero, Hero, Dark, Neutral, Dark, Hero from the bottom section. 1, 2, and 6 are Hero = light = white circles, and 3 and 5 are Dark = black circles (this equivalence is motivated slightly by the fact that in 🌳, the Dark path is dark and the Hero path is lighter). 4 isn't used because it's neutral.

With this circle coloring, even as a usual masyu, the masyu has only four solutions, and go rules make three of them impossible (gomoku rules are irrelevant; none of the options have a five-in-a-row). The solution is:

We use the inside/outside of this loop for the top section, but we haven't yet used the three green rectangles, each of which contains five intersections. We notice that in the solution, each of the intersections in each of these rectangles has a circle. We can read the circles as binary, with black = 1 and white = 0.

So our three letters are UER. Without the previous part, breaking into this part is very hard.

Final Extraction

Now that we have all the letters, we can use the extraction diagram at the bottom of the puzzle. It shows four rows of three letters, with the three resulting columns all read down, in left-to-right order. We'd expect to write the rows in cycle order; it's not clear where to start, but it turns out that we start at the top.

Reading down the columns, we get A LOUDSPEAKER, this puzzle's answer.

Authors' Notes