Great game but i would rent it just to be sure
This Sim game was what i expected you have to live and survive on different islands.In Sims 2 castaway you get a chance to be an unlucky castaway. On the islands you meet monkeys(which you can have them as butlers) and meet your fellow crew members to create a tribe to escape the dangerous islands.
Once your playing and you have resources you can make clothes, shelters,fires and etc. Some shelters can be small for just one person and others can be big for more than one person. There are tools that you make which help you survive some include bamboo stick (for catching fish),and a knife (which will be used for many different things)
My final advice is that RENT the game first. Too, many people buy it and don't like it and waste their money. Don't let that be you :)