Townseek is a colourful casual exploration and trading adventure game from developer Whales And Games, with a brand new big upgrade for the demo available.
More about it: "Take to the skies on a whimsical voyage across Explora and uncover the lost legacy of Sir Reginald Sharkingston! Trade, fish, mine, and farm, meeting whimsical characters and exploring vibrant towns along the way. The whole world is your sea now, so set sail and see all it has to offer!"
Check out the original trailer:

Direct Link
The game is going to be presented at the next BitSummit event, so they've gone through and upgraded the demo. If you tried the demo previously, they said there's a lot of new things to discover in it. There's also improved gamepad support, a new photo mode, new cosmetics, new conversations and lots more. Progress will also now carry over to the full game which still does not have a confirmed release date yet.
In the demo you can "Fly at your own pace, trade over 200 items between five different towns, upgrade and customise your airship, discover landmarks, find random events, and much more".