Really lovely concept. I think your welcome map is too complex seems like that should be simplified for a good first experience for more devices. I'd like to be able to rotate around the map but seems like it's fixed in one direction. I picked up 5 balloons and started to fly but i couldn't get down.
Thank you! There is a button to switch the type of view on the bottom left (isometric, top view, first person) which could help out here.
To release the balloons you need to press space and you will fall back down on the ground.