Mechanics are a bit quirky, in a charming way.
It's a SPACESHIP with a KATANA!
"Säll" is a rarely used Swedish word that refers to a very special form of well-earned joy. This little game is full of "Säll".
(But honestly, the room where you have to wall jump against a wall that leans outwards and and then push a little block to make it push a switch, that almost drove me crazy.)