Logic puzzles are one of my absolute favorite things. These days it's hard to find books of JUST logic puzzles, so the two I have are strictly rationed - otherwise I'd do them all in one sitting and be very sad later. (I know apps for that sort of thing exist, but they just aren't the same, and I'm definitely not that hip)
Tied with logic puzzles on my favorites list are personality tests, if we're being real honest, and survival games fit nicely in the venn diagram of the two. I came across one called, "Lost at Sea" today, so logically, I'm now obsessed with it. I spent lunch today working on the aforementioned, along with one based on the moon, and another in snowy Canada with my work-mate, Cupcake. She excelled in the snowy tundra, while I did my best work on the moon (28 points!). It would probably take both of us to kind of survive in a shipwreck (62 her, 32 me). If you'd like to play along, the original version I found is here. Let me know if I need to call you up next time I head out to sea...