Use the arrow keys to move if the tree is touching the cross and the tree size is above 190 you can press space and it will be like you are collecting wood in minecraft. After the tree disappears you can hit the A key to plant a tree and make it grow fast. The house does not do anything it just is for decoration purposes. How does it work? 3d aspect -when you hit the arrow keys it will broadcast a message to the tree and house to change size. tree disappearing- If the size of the tree is greater than 190, the cross is touching the tree,and you press space it makes a ghost effect to make it like you are cutting down the tree after the tree disappears you can hit the A key to plant a tree and make it grow fast.
