I don't really worry about spoilers very much, as I find most games and movies are just as fun if you go into them knowing what happens as they are when you come in blind.
But this is one game that I accidentally got spoiled on, which is a bummer, as that's a lot of the fun. Fortunately, only half of it was spoiled, and the rest was still a mystery.
In this game, the names of everything have disappeared. All you see around you is 'something' and an 'other thing'.
The whole game is about experimenting and trying to figure out what those things are. Once you have an idea, the game is pretty short.
Overall, fun and well-done.