The best and quickest explanation of what Olvand has to offer probably is [the introduction text on the first page] and [this video], but you might be interested in a more detailed list of what the game has to offer.Page 1 || Page 2
Gather materials, craft your own tools, and then gather even more materials to craft your own house with these tools.
Various buildings for towns and cities
Think of townhalls, pubs, post offices and banks. I hope this will help the inhabitants of these towns and cities to form real communities.
There will be a number of multiplayer minigames to be played against your friends, or players of another city, or... anyone basically. Think about self-made races from one town to another, or a large scale fishing contest on a nearby lake.