Get quick and convenient access to just the hints you need for Return to Mysterious Island, without staying on our website. Just download a free trial
version of our UHS Reader software and
a copy of these hints. You will get the
same gradual hints you see here -- unlike ordinary cheats or a
walkthrough that can spoil your game.
You can also buy the full version of the UHS Reader
for Windows or macOS. For just $14.95, you get full access to hints for
hundreds of games and 1 year of free updates. You can also search, decode, or print an entire
game's worth of hints at once.
Ask the Author
If you have questions about a puzzle that aren't answered
anywhere in these hints,
you may contact the author.
Return to Mysterious Island Hints
Where can I find saltpeter?
1 of 8: Saltpeter is a natural mineral, consisting predominantly of potassium nitrate. It is often found when air and moisture allow "nitrification" of animal or plant decay.
2 of 8: Where, on the island, might there be a place that is damp, cold, and clammy?
3 of 8: Have you been down in the cavern below Granite House yet?
4 of 8: From the back left cavern (the one with the crude bookshelf, and the inscription on the wall), look around to find a hole in the floor, with a ladder leading down. ("A faraway cry..."!)
5 of 8: As you climb down the ladder, check the walls around you.
6 of 8: You should find some saltpeter on the walls of the cavern, at the bottom of the ladder.
7 of 8: It's the whitish material on the wall behind the ladder.
8 of 8: Click on it to take the saltpeter into inventory.
