Can you get your treasure back to your ship ? Beware of the crocodile and the natives ! Don’t dig for treasure till you’ve read the map !
Paul Shave’s third release for 1981, like Atom Adventure, used his Create Your Own Adventure system.

Via Everygamegoing.
Also like Atom Adventure, the goal is to gather all the treasures, and many of the objects are randomly scattered. Unlike that game, it doesn’t have super-tight timing (although I haven’t gotten a full score yet, so maybe I’m wrong).
Most of the game is set outside, so a light timer isn’t really an issue. (There is a tinderbox you can light for the purposes of one room.)
There’s an initial “short-term” timer with a crocodile that eventually shows up and starts following you. The crocodile has a ticking sound (yep, it’s a Peter Pan reject). Eventually, the crocodile bites your head off, but if you have a knife, you can kill it and cut it open, revealing a clock.
Note that by bad luck you may run into the crocodile before you get the knife and just die on a particular run (this is another similar element to Atom Adventure).
A “long-term” timer is formed by “natives” that show up at random and shoot poison darts at you. There’s a village where you can buy antidote from other (different?) natives for TWO PIECES OF EIGHT and you can APPLY ANTIDOTE in order to avoid dying.

The antidote is not well described, so this is a likely result from first trying it out. I admit being more amused than frustrated, since this wasn’t far in.
However, the antidote only has so many applications, so you eventually will succumb to a poison dart if the game goes on long enough.
Additionally, the antidote is considered one of the treasures, and there’s a pirate that shows up at random that will swipe all your treasures and take them to his “lair” which is just a spot in the forest. It’s possible to have very bad timing and get the antidote swiped from your inventory right before getting shot with a poison dart, so the pirate inadvertently does a combo special with the natives conspiring to kill the main character.
As noted in the screenshot above, there’s a place marked GRUD OMASSI. If you say these words anywhere on the island you get teleported back to the GRUD OMASSI spot and have all wounds healed. This makes for a nice backup plan for getting stuck by poison where the antidote is too far away. (It works twice, but the third time kills via a lightning bolt, so it’s still an emergency-purpose-only situation.)
The natives that sell an antidote also have an idol which counts as a treasure, but if you try to steal it, they cook you over a pot.

I’ll save some extra commentary on this for the end of this post.
I mentioned getting a clock from the crocodile already. If you give them the clock they gather around it, fascinated, which distracts them enough you can steal the idol.
To win you need to sail away, but the catch is there are two ships. Observe on the map:
There’s a “ship” both on the north side and south side, with a shore and rowboat conveiently placed. You need to LAUNCH BOAT, ENTER BOAT, and ROW BOAT to get to the ship, at which point you may find the HISPANOLA (good!) but it may be the SANTA MARIA (bad!). If you board the Santa Maria you find pirates who make you walk the plank: game over. The placement of the two ships is random, so you have to check and may need to turn around to go to the other ship.
Assuming you do get on the correct ship, you can RAISE ANCHOR and SET SAIL to victory. (The game doesn’t tell you about RAISE ANCHOR; just like drinking the antidote, it expects you to step into a losing game once. “Dying from things that are realistic and logical but in gameplay terms unfair” is sort of a running gag for Pirate Island.)
You may notice a lack of 16 out of 16 in the screenshot above. Each treasure is 2 points, and I’ve managed to max out at 12 with a RUBY RING, GOLD NUGGETS, JEWELS, IDOL, ANTIDOTE, and SILVER BAR. (The first four are randomly placed, the antidote is always bought at the village, and the silver bar you get from a gorilla by trading a banana.)
I sometimes end these with “whelp, the game was too painful, that’s it” but for some reason, the missing points here really gnaw at me. I think it has to do with the advertising blurb I quoted at the top of this post, which you might notice mentions a map for digging. I have found a SPADE in the game and tried digging the ground in every location, so no dice at random luck: I think the map is necessary to find whatever treasures remain. But I have no idea how to get the map! In addition to what I’ve mentioned, I’ve found a PARROT (which perches atop the player’s shoulder), some WOOD SHAVINGS, a BOTTLE (which can be filled with WATER), and some CHEESE. I haven’t been able to make use of any of them. I had strange notions of “reconstituting” a map by combining wood shavings and water, but no luck (at least with the parser commands I tried).
(If you’d like to take a crack, download the Atom Software Archive here, the program Atomulator here, drop the archive files in the “MMC” directory, then start the emulator and pick shift-F12, which jumps to a menu that accesses every available Atom game, including PS3A, Pirate Island.)
Oh, and the natives. They are definitely just old-timey cartoon stereotypes. I especially felt uncomfortable stealing the idol. The pieces of eight (which you use to buy the antidote) incidentally count as a treasure, so it’s possible to get a full point spread you need to steal the antidote in addition to the idol. This makes me tempted to just bail out early for story purposes like I did with It Takes a Thief. But really, where is that map?
ADD: You can see in the comments I missed a location, so I found the map and an extra treasure. No idea on the last treasure; I still have to spend the pieces of eight to get the antidote, and haven’t found a way around that.