Time to completion: 20-30 minutes
The Shape of Our Container is a peaceful, conversation-led game about lying in the grass with your loved one. Similar to the other tiny utopias, there is a broad sense of forgiveness and peace. Structure-wise, the game has a broadly branching time-cave structure, allowing large variations between play-throughs. This gives the impression of living many parallel lives, of the impression of time passing.
Container is definitely polished and has fairly high replay value. Short, tender and intimate.
Time to completion: 10-15 minutes or shorter
Fridgetopia has been described by the author as "mechanically utopian", in that it doesn't necessarily sketch out a utopia per se: there is not much world-building here. But this is not a slight against the game. Rather than describe your interactions with a specific space or time, Fridgetopia instead gives you tools with which you can create your own world, to a certain extent.
Fridgetopia is very short, and perhaps not very polished. It reads as much as a coding exercise (albeit an interesting one) as a game, but it does hide at least one secret, which... let's just say it deserves the label of 'fridge horror'. Very clever.