This is a very clever little game. It is one of those games that basically have a single puzzle. In this case there are a couple of things you have to do, but once you work out what’s going on, it’s not enormously difficult to do them. The tricky part is working out what’s going on. The best procedure if you are having difficulty with this is but don’t want to be told the answer outright is (Spoiler - click to show)to make a map, showing where you actually can and can’t go, and compare that to the map that is provided.
It is hard to say any more than that without spoiling the game.
The basic mechanic is very simple (if utterly confusing at first), and there is nothing really to the game other than this: no objects besides the couple involved in the puzzle, and not much else to look at along the way. The puzzle itself is short and the game does not take long to play at all once you twig. What content there is seems to be well implemented and I didn’t find any bugs.
Overall, then, this is a simple game that does little other than introduce an initially confusing but ultimately elegant mechanic and leave the player to work out what that mechanic is – but it does it very well indeed.