If you're looking for the Castaway Page, go here.
And here we are, once again. I've gone from a Sims 2 page, to a Castaway page, back to a Sims 2 Pleasantview page, and now I'm back to a Castaway page. Why? Because it's such a good game, and I'm going to put it on my PS3 soon. Plus, I have the Castaway Prima guide now. Ooh, that's cheating. After all the work I did on the Sims 2 Forum, and now I'm pulling out the guide. All the Forum stuff was stuff that I'd worked out for myself, too.

Skills
Cooking: Cook a meal, or harvest fruits and veggies
Mechanical: Make tools, or build huts
Charisma: Socialising
Body: Climb trees or spear fish
Logic: Fish with a pole, find map pieces and hieroglyphics
Creativity: Sew some clothes or make some music

Your Crew
Many people have posted on the Sims 2 Forum saying they can't find their crew. They're not on the first island. You have to have created more than one Sim to have other crew-some people didn't know this. You'll find them on the second island, Airplane Island. When you do find them, you have to befriend them and ask them to join your tribe before you can control them. Good luck!

Marriage
It took me ages to figure this out, but I have finally wed two Sims! They need to have a high relationship (probably over 70, mine were at 100), and they need to be wearing Wedding Clothes. These can be made on the Crafting Benches, and consist of: the Wedding Lei and the Wedding Beanie. The Lei is found under jewellery and the beanie is found under hats, both in the clothing section. Get one Sim to propose, and they should accept. Nothing special happens, and if they decide to divorce, the one been dumped is kicked out of the tribe. You should be able to regroup them again, though.

Sisal is found on the second and third islands. You use it to make rope and twine, which in turn is used to make other things-like clothing, or boats.

Geyser Plains
Can't get through the steam? Try this... Next to where the opening is, there's a bit where you stand next to a rock and examine it there. My girl looked at it and shrugged. I then sent my guy up there and he fixed it. I *think* you need all 4 logic skill points. He pushed the rock onto the geyser. When you go into this area, it just gives you a shortcut down to the Volcano Overlook. This is also the back way into the temple if you haven't found all the hieroglyphic pieces.

The Heiroglyphic Pieces
There are nine Heiroglyphic pieces scattered around the 3 islands. When pieced together they reveal the history of the Llama People who first inhabited the islands. The massive heriroglyphic tablet can be used as a giant decoration in your sims house (the best room score in the game!) or can be used to open secret passages on Volcano Mountain. These include the doorway on the Geyser Plains which leads to the Llama Temple Interior, and another door from the Temple to the Volcano Summit. This is extremely handy if your goal is to get your sims off the islands. These passages waste no energy and can get you to the summit where you can use the Radio Transmitter to send out the SOS. They also provide handy access to the Temple Forge and metal ores on the summit.
There are 9 Heiroglyphic Pieces located in:
Shipwreck Island
1. Deep Jungle (Crossroads near glowy bugs)
2. Pier Beach (Next to the pier where you dock the raft)
3. Shipwreck Lagoon (On the deck of the ship)
Airplane Island
4. Dark Cave (Next to the ancient door)
5. Skull Rock Jungle (Next to the skull rock)
6. South River Jungle (Banks of the river, near rock formation)
7. East River Plains (Next to quicksand ruins)
Volcano Island
8. Volcano Jungle (On a ledge near the hot springs)
9. Geyser Plains (Ironically next to gateway) Treasure Map Pieces
1. In a bottled message on a beach
2. Given to your Sim by a chimp (after you befriend him and get him to collect stuff for you)
3. West Beach. Found when diving for clams.
4. East River Plains. On ground next to pillar (accessed through the Hidden Lagoon)
5. Tidal Pools. In the tiger shark
6. Tidal Pools. After successfully doing the cliff dive
7. Volcano Jungle. Found when you get into the Hot Springs.
8. Volcano Summit. After climbing to the top the hard way.
9. Crystal Island. On the ground near the alien platform.

Once you have all 9 treasure map pieces, craft them together on bench. There are 2 Entrances to the secret location. One is from the Skull Rock Jungle (you move the Skull out of the way), the other is from the West Beach. Walk into that little spot where you can harvest heaps of food, and to your left there is a rock that can be pushed out of the way. Walk through, go onto the pirate ship, and open the treasure chest to find your prize!

Chickens
You'll get the option to build chicken traps on the third island (was it the third???). You'll have to make a crafting bench, and leave the trap out. Don't check it for a few days, because it takes awhile to catch one. When you do catch one, you should get new plane for building nests for them.

Boars
They're rather simple, really. Just pull out your spear and chase them. I've been told you need a certain skill, but I don't know what it is. Chase him round, and he'll eventually attack your Sim, leaving you with a pile of ham. You'll also gain some leather and boar tusks, which you can use for clothing.

Gardens
Are made from ash. You get the option to build these on the second island, I believe. The plan is under "special". Stick it anywhere on the ground, and pant anything you like. I like planting resources-bamboo and sisal, because I use so much of the stuff. Though at the moment I'm growing a flower garden because I use them in clothing dyes.

Sending an SOS From High Ground
Are you on Volcano Island? You need to have reached the Volcano Summit. Place the radio on the ground. You need to have the Transmitter in your inventory. There should be an option on the radio saying "repair transmitter". After that's done, there'll be an option saying "send sos". A nearby ship will pick up your signal, and rescue your stranded Sims. There'll be a short "movie" showing your Sims being rescued, and your Sim returning home to pay the bills. A message pops up asking if you'd like to go back to the Island or leave without saving. (something like that). I had other stuff to do on the Islands, so I haven't left yet. I went back to the Island. I quite like it there.

Shark Fishing
The shark-you need a fishing rod, and I've heard the best spot is in the Tidal Pools. I caught some Tiger Sharks down there. Just go down there and fish. Have you figured out the secret to fishing yet? My sister told me. You watch the little red floating thing. It'll move closer to you when there's something on the end of the line. Reel it in and see what you caught! The good thing is, you can't catch boots, like in the Sims 2 Seasons. You always catch a fish!!!!!

Getting Through The Ancient Door
This door is located in the Dark Cave on Airplane island. You can't get in here until you've located all 9 of the hieroglyphic pieces (which are listed above, in Part Two). You then have to use the crafting bench to put them all together (they're located under the LEISURE menu of the plans), and you'll then be able to open the Ancient Door in the Geyser Plains on Volcano Island (does this make sense?). When you get into the Llama Temple, behind the throne, there's a crown. This was one of your goals. Having this crown enables you to open the Ancient Door in the Dark Cave. You now have access to the Hidden Lagoon!

The Hidden Lagoon
Harvest all the flowers you can, you'll use them later for making dyes for your clothes and jewellery (well, I do). I think you have to stay in the lagoon for awhile before you can complete the "Enjoy The Palace" goal. When you're done, find the other exit (not the one you came in), leave.... Ah, you can't get past that quicksand? Examine the pillar on the left. Your Sim should knock it over, and you can now leave. Yea!