I just finished playing Keeper. This is a delightful little adventure, voiceless, set in a surreal world, featuring a walking lighthouse as it's main protagonist. Stuff like this rarely gets made these days. For it to have been by published by Xbox Game Studios is nothing less than a miracle.
It took me a little less than 5 hours to get through it but there is a lot they get out of it with the simplest of mechanics. They also manage to throw in more than a few surprises along the way. If you are looking to try something non-violent, delightful to look at and just dive into those creative ideas that Double Fine came up with this is your game.