Here is a run down on the actual "game", what you can do:
Get Bucket, Use Well (to fill bucket), Plant Tomato, Fix Broken Axe, Chop Tree, Catch Salmon, Use Fire (cook), and Make Boat.
The DeadTree spawns every one minute, if you cut the tree at thirty seconds the new one will appear in thirty seconds (the refresh).
To sail off the island, you need four logs to make a boat ... so if you cook Salmon, it takes longer to get off. The idea is to cook salmon until you get tomatoes growing, then you won't need fire and can use the wood to make the boat.
Clicking on a "scroll tile" checks to see if you have the boat, and enough health to survive the ocean.
The next release will hopefully include scrolling, so we can begin mapping a new world. :)