I wrote these comments on the levels before the results came out:
Crysilis - I didn't vote for my own level.
I was a bit surprised to see that when the theme was to design with the same tileset, Crystal, I was the only one who went with the bumpy terrain theme (Luis and minimac maybe a bit too, nice!). I said that this level is somewhat different than my earlier contest level, 'Feel the Pressure'. I designed Crysilis purely aiming for a level, that offers lots of leeway how it can be solved, but no solution is too easy compared to others. There’s this one main trick that everyone who solved my level used, so I’m happy to see that no one backrouted my level. : )
I recognized where the title Crysilis is from, at first I thought it's just one of those no-builder techniques levels like I've made two before, but skill distribution makes this a lot more interesting.
Oh no, now I think I know at least one level you’re referring (geooPk1 – More ‘No Builder Problems’), but that really didn’t come across my mind, and I haven’t managed to solve that level either, so I didn't know.

I really don't want to create levels that use significantly similar methods etc. than has been used in other custom levels earlier, sorry!
Clam Spammer - Switchback Symmetry - My votes: 7 for originality, 6 for fun, 7 for appearance, 7 for difficulty
I know that Clam is so strongly established and appreciated level designer (definitely for me also) that criticism won’t hopefully hurt.

I don’t still know why RR is set as so it is, I don’t see its function here. Instead I got a bit annoyed when I tried to change the RR, I don’t know how it works but then some lemmings spawned randomly at RR99, and then again in extra long spaces between. This level also had a lot of those “wrong” object placements to make things look better, but yea I’d guess it’s not a bad thing. Also, I don’t like messy one way arrows that are there only for preventing backroutes (not for the puzzle itself), and in this case, they didn’t even prevent my backroute. :q Otherwise this level seems really interesting, and I still don’t have a slightest clue about the intended solution, it’s probably so impressive what could be expected for being a solution for Clam’s level.
geoo - Lemming Sound System - My votes: 9 for originality, 7 for fun, 7 for appearance, 9 for difficulty (estimation, I didn't solve this level)
Gronkling found “left-facing-entrance” trick already in his Lemmini levels, but this is the first time I see that used in a Lemmix level, it works nicely with the black Crystal tileset terrain. :b The level itself seems that it's obvious what you need to try, but I still don’t have a clue how a working solution could be reached. Definitely points for originality, the design theme and the skillset seem really unique. Yet again it seems that geoo manages to create a level with the fewest backroutes, congratulations! :b (And the fewest any solutions, too… :--D)
Insane Steve - Mazeochism - My votes: 8 for originality, 9 for fun, 8 for appearance, 6 for difficulty
This level won clearly the most fun level category for me! I enjoyed this level the most completely despite the fact that there’s many, many different ways to solve it, even in every released version. Even backroutes were fun to find, and the right feeling solution has various different types of obstacles to get through. I tend to appreciate massive levels as well, I don’t know exactly why but large levels are in some odd way attractive in my opinion especially if they’re designed with love. (Yeah, if you just throw randomly terrain to fill the whole level, then no thanks.) The crystal sticks look a bit bare in places, though.
Luis - Miracle Freezly - My votes: 6 for originality, 6 for fun, 7 for appearance, 3 for difficulty
I was really happy to see and play a level made by Luis, because I don’t know if he’s ever released any level for a wider audience to play, except 'Temple of Return' and the PSP levels. This level felt most like in the original games with the huge map and not-too-gimmicky solution. I found multiple solutions for this one as well, and I don’t know what is the intended one. What I didn’t like is the messy one way arrows, this problem was in few other jam levels also.
minimac - Electric Factory - My votes: 7 for originality, 7 for fun, 7 for appearance, 6 for difficulty
Rather nicely constructed level with its skillset and the layout using many various types of terrain. As in many other levels in this jam, it was nice to try to find the correct path to approach the solution, because it seemed that there could be few working paths. Messing around with the grid terrain was as funny as it always is. The loner metal block and trap placements were minor nitpicks of the visual appeal, as well the fact that the level was a bit off-centered to the left.
möbius - Pillars of Creation - My votes: 7 for originality, 7 for fun, 7 for appearance, 6 for difficulty
This level took me surprisingly long to solve compared to how simplistic the layout was, the crowd control puzzle was trickier than it seemed at first. I got confused that the wall at the right is four crystal squares wide and only three squares wide at the left, so that tricked me, for example. A somewhat pleasant layout, though that crystal rod decoration at the edges seem a bit plain. Edit: I just noticed that this level has 30 minutes as a time limit. :---D
Pieuw - Utopia - My votes: 9 for originality, 7 for fun, 10 for appearance, 8 for difficulty
Well… this. I was really amused after I played this level, because I was wondering how Pieuw will cope with us now that the jam is not about Lemmini levels where he’s used to (even though there's not much difference). Well, that issue was completely pointless, because this level is ridiculously outstanding. I opened this level in Lemmix and it was like two seconds and I knew that here is something particularly exquisite. The visual design with its theme is unseen in the whole level scene. Even with strict evaluation, this level gets the maximum points from me in the good-looking category, and was completely overwhelming in this level jam compared to all the other levels in this category.
The solution took surprisingly long for me to find out in this level also, and it involves a trick that’s quite rare in general. And I love how almost every part of the level is used. The visual appeal is so magnificent, that I’m not sure if the solution itself seemed more lame than it actually was!

This and geoo's Lemming Sound System won my originality category with 9 points each, though in Utopia more originality points came from the original design rather than from the solution.
I compiled the votes for different categories (aargh I wish I knew how to use tables...

):
OriginalityUtopia - 8,50
Switchback Symmetry - 8,25
Crysilis/Lemming Sound System - 8,00
Mazeochism - 7,20
Pillars of Creation - 7,13
Electric Factory/Miracle Freezly - 6,00
FunPillars of Creation - 8,00
Utopia - 7,63
Mazeochism - 7,24
Switchback Symmetry - 7,00
Miracle Freezly - 6,60
Crysilis - 5,30
Lemming Sound System - 4,00
AppearanceUtopia - 10,00
Crysilis - 9,30
Mazeochism - 7,70
Lemming Sound System - 7,00
Miracle Freezly - 6,80
Pillars of Creation/Switchback Symmetry - 6,50
Electric Factory - 6,00
Total pointsUtopia - 26,13
Crysilis - 22,60
Mazeochism - 22,14
Switchback Symmetry - 21,75
Pillars of Creation - 21,63
Miracle Freezly - 19,40
Lemming Sound System - 19,00
Electric Factory - 18,00
DifficultyCrysilis - 9,67
Lemming Sound System - 9,50
Utopia - 8,33
Switchback Symmetry - 7,33
Mazeochism - 7,25
Electric Factory/Pillars of Creation - 6,00
Miracle Freezly - 4,75
And now my comments after seeing the results:
Thank you everyone for this level jam!

I enjoyed this really much and like I said, I'm ready for the next contest if there are people who would also like to participate.

Congratulations Pieuw!

At least in my opinion the victory went to the right place, and now when I look at the total points list, it seems that everyone liked it a lot, and in the end your level ended up beating all the other levels quite clearly (with over 3,5 points!).

Congratulations for winning 'The most original level' and 'The best looking level' categories as well (the latter one with, well, pretty impressive full points), and congratulations möbius for winning 'The most fun level' category!

I was so concentrating on voting and playing others levels so I almost forgot that my level was also here, getting votes and being judged by other people.

Hahaha that you guys considered my level the hardest came as a big surprise for me :DDD I know that three people solved it! And yes, in my opinion it's completely reasonable to give a low fun score for a level that feels hard and/or frustrating, and it's completely reasonable that easy levels can be considered more fun than hard levels.

Like I've many times wanted to highlight in these forums,
the difficulty of a level has nothing to do with how 'good' is that level. That's one reason why I was really shocked that you originally tried to add the difficulty points to the final points, möbius.

And I want to highlight again, that it brings a lot more diversity and is a lot more fun, if people design levels with different difficulties to these contests, you don't need to design as hard as possible level! I'd hope that wider audience will enjoy the contests more in this way also.
So, again big thanks for Clam Spammer, geoo, Insane Steve, Luis, minimac, möbius and Pieuw for taking part to this level jam!

I had a lot of fun, I hope that you had too.