How to survive your first day:

When you wash up you're nearly dead, hungry, tired, and exhausted.
Your health will drop if any statuses (hungry,tired,exhausted,cold) are in the red.
Resting while your statuses are ok will restore health
Quickly drink some water from your flask. (x -> items -> flask -> drink)
Find some fruitberries and pick them then eat them.
Salvage wood from your boat, and chop down another tree and get the logs
Build a shelter, eat, drink and rest, stay warm
After this, focus on finding freshwater (it has white sparkles) so you can drink and fill your flask
Then try and find some stone and build a cabin which will replenish your stamina fully
Build bridges to new areas
Features:

Day night cycle
Weather
Temperature (it's colder at night and when it's raining, stay warm in your sheltercottage)
Simple menu system
Procedurally generated world
Bridge building
Building wells that fill with water when it rains
Plants grows overnight while you're resting

License: None (Free)