Here's my 4-hour level. The music is from Dah Gunk by Ryan Cross. The title comes from suggestions by Spriteclad and Fubaka over IRC. It features challenges based on RelicShine's first version of Mystery Island and pfrangip's The Tower of Joy.

and we lived to see another day
Kind of a response to some of the comments in Pineapple.
Edit Sunday, August 9th: I changed the end of the wall swimming area and added a few more save points.
My first Knytt Stories Game. Game Jams are so helpful to me. It makes me execute something rather than just testing indefinitely.
Also, She wasn't intended to be able to run. I kept deselecting the run ability in "Set Start Pos" but it never took.
This Knytt Stories level will attempt to scare you.
If you want to turn on ultra-spooky mode (not recommended for first-time players), walk all the way to the left in the first room before entering the house.
Finished version of Healy's "Springy Spoingy" Knytt Stories level. It's a level about bouncing on flowers. In fact almost the entire level is covered in bouncy flowers. If you're good enough you can even bounce all the way to the end without touching the floor!
Environmental, with a few challenge segments. There's an optional bounce challenge that, when completed, gives you a special item.
I feel like this is a bit linear, and my rock formations are nowhere near as extravagant as Healy's. I'm also concerned I don't have enough bouncing action near the end. Still, I'm satisfied with it overall, especially with how I found different ways to incorporate bouncing into gameplay.
Be aware that as I was making this I thought to myself "Wow, this kind of disturbing."
Anyway, the basic background for this is that I'm writing satiric Christian fanfic on this forum I go to. Since Knytt Stories is basically fanfic already I thought, why not make a Knytt level for it? This has two endings, by the way.
Tiny House is yet another entry in Sergio's "One screen" competition. Actually I think the due date for that has passed, but since I haven't seen him pick a winner yet I decided to make another entry, mostly just to pass the time. Again, seeing the one screen would probably spoil the fun, so I'm holding off on a screenshot. Instead, have this picture of a house I found in my pictures folder!
Sergio has a level competition on the Nifflas Forums that's all about single screen Knytt Stories, and since I had already made a single-screen Knytt Story called Angry Sonata for the last Pirate Kart, why not make a sequel to it for the competition? So I made this. It's real wee, so no screenshot. Tilesets by Sergio Cornaga and Nifflas, music by Jacob Godwin.
The most important game you will see that focuses on moral choices, because it has a quote by Goethe at the beginning!
Game name at least partly inspired by another moral choice game, snapman's Eat a Baby or a Burglar.
(Made in Knytt Stories, natch.)