"Swigian" is an Old English word meaning "pause", and this story indeed takes place during a pause or lacuna in a more famous tale. I quickly figured out what story I was in, though nailing down specifics took a little longer thanks to the mysterious and laconic presentation.
You play as an individual who is far from home and trying to get back, along the way searching for food and protection and trying to avoid enemies referred to only as "them". Location descriptions are spare and evocative, supplemented by moody pixel art, and most items don't have particular descriptions. They "are what they are", which quickly trains you not to spend too much time looking at your surroundings. You have to keep moving, after all. Otherwise they might find you.
The puzzles are simple, which along with the sparse text makes this a quick play, but it is surprisingly long on atmosphere, supported by the strange and dreamlike nature of some of the actions you must take. As a literature nerd, I enjoy an unusual and creative retelling of a classic, and this certainly qualifies. The little episodes where surreal things happen for mysterious reasons also give an authentic feeling of reading an old epic or a fairytale, something with an internal logic not quite of this time and place.