What do you have to do on sims castaway

Which version of the game do you own?

If you own the PS2 version, you create a group of Sims. Your Sims are stranded on an island, and you must choose which sim you want to control for the start. You then have to find the other stranded sims.
When you find the stranded sims, you need to get resources to build fires, bridges, beds and other furniture.