General Knowledge
Would You Survive on a Deserted Island? Quiz
Stranded with nothing but your wits — would you make the right survival decisions?
Stranded with nothing but your wits — would you make the right survival decisions?
The average person can survive only about 3 days without fresh water, making it the single most critical resource on a deserted island. This quiz puts you through 50 scenario-based survival challenges covering water procurement, shelter construction, food foraging, fire craft, navigation, and rescue signaling to see if you have what it takes to survive until help arrives.
You'll face 10 randomized questions drawn from our pool of 50 deserted island survival scenarios. Each question presents four options — only one is the best survival decision. After each answer, you'll see an instant explanation with the reasoning behind the correct choice. Share your score to see which of your friends would make it off the island alive.
This quiz covers essential island survival skills: finding and purifying fresh water using solar stills and rain collection, building storm-resistant shelters, identifying edible tropical plants and avoiding poisonous ones, starting fire without matches using friction and lens methods, reading ocean currents and tides, signaling passing ships and aircraft, handling dangerous marine life, treating sunstroke and infections, and making smart decisions about whether to stay put or attempt to leave the island.
Yes, there are many documented cases. Alexander Selkirk survived alone on a Pacific island for over four years (1704-1709), inspiring the novel Robinson Crusoe. More recently, in 2000, a Tongan man named Sione Filipe Mokofisi survived on a small island for 11 months after his fishing boat capsized. Japanese soldier Hiroo Onoda lived in the Philippine jungle for 29 years. In each case, the survivors prioritized water, shelter, and resourcefulness.
Finding and purifying fresh water is the most critical skill. Without water, the body begins to shut down within 72 hours. On a tropical island, key water sources include coconuts (the water inside young green coconuts is sterile and hydrating), rainfall collected using large leaves or improvised containers, and solar stills that evaporate and recondense seawater into drinkable water. Fire-starting is a close second, as it enables water purification, cooking, warmth, and signaling.
The most effective methods include building a signal fire on the highest visible point (add green vegetation or rubber for thick smoke during the day), creating large ground signals like SOS or X using rocks or logs on an open beach (at least 10 feet tall from the air), using a mirror or any reflective surface to flash sunlight toward aircraft or ships, and flying a brightly colored flag or cloth from a tall pole. The international distress signal is three of anything — three fires, three blasts, or three flashes — repeated at intervals.
Last updated: March 2026