Artificial Stupidity: Occasionally happens in Lost in Blue 2 if you leave your partner alone. Even if you leave a lunchbox and bottles of water in their inventory, they refuse to actually eat/drink it even if they're dying. Meaning the safest course of action is to drag the other character along with you.
Bittersweet Ending: One of the possible endings in Lost in Blue is unlocked when you spend 365 days on the island without finding a way off. Suddenly there's a cutscene where the two characters realize that they'll never get off this island, but it doesn't really bother them anymore. There two similar cutscenes in the original Survival Kids, found after 100 days—one if you've rescued the other kid, and one if you haven't.
Blind Without 'Em: Attempted justification for Skye's inability to do anything in Lost in Blue.
Bottomless Bladder: You have a hunger meter, thirst meter, health meter and fatigue meter, but no bladder meter.
Cool Clear Water: Averted. In the beginning of Lost in Blue, there's a freshwater river that has fish swimming in it, and your character comments that it looks safe to drink. There's also a small hole in a temple you have to go through that is apparently safe to drink from.
Emergency Weapon: Should Jack run out of spears in Lost in Blue 2, he can take enemies on with his bare hands. Punches hit for puny damage, but successful dodging can lead to him taking down a tiger like a man.
Fake Difficulty: The puzzles are not challenging. Keeping yourself from dying of thirst and hunger is challenging.
Fishing Minigame: There are actually three methods of fishing—traps, spears, and fishing rods. In the Lost in Blue games, fish is the most efficient food source.
Feminine Women Can Cook: Skye is in charge of making the meals, and finding special ingredients is a minigame you can do while playing as her.
Gotta Catch Them All: There are many different kinds of fish, animals and plants that you have to collect for 100% Completion, and that's not even getting into the different kinds of tools, furniture and food you can make.
Guide Dang It: Want 100% completion? Better look up a guide! Especially in Lost in Blue 2, where the final plant is little more than a pixel.
Hyperspace Arsenal: An odd example. Your characters' bags have enough capacity to hold exactly twenty items. It doesn't matter what they are. Just twenty items. One has to wonder how Jack and Amy can only manage to hold twenty leaves at one time, yet somehow manage to shove twenty logs down their asses.
Insurmountable Waist-Height Fence: Generally averted with the male characters who can climb. Depending on the game, female characters may be hindered by things actually intended to aid mobility like bridges, ledges or stepping stones. In Survival Kids, both male and female characters are unable to cross shallow water.
It's Up to You: You can't rely on the non-player character to get you off the island.
Island Help Message: In Survival Kids, the way to get the quickest ending was to build one of these on the beach. You'd then get rescued. (It is, of course, a long ways from the Best Ending, which you need to unlock New Game Plus mode—in which your character rescues the other child on the island, befriends them, the two of you escape on a Lost Technology ship, and grow up to get married.)
James Bondage: Ken, the male character from the first game, is this if you play as Skye.
The Load: In Lost in Blue, whichever character you don't choose ends up as this due to their being badly injured.
Long Song, Short Scene: Unless you are really bad at cooking, chances are you won't hear much of the cooking song in Lost in Blue 2. Even then, you're forced to just end the cooking after 99 seconds of failing to complete it.
Not Distracted by the Sexy: The player character in Lost in Blue 3 is willing to give the best possible bath they can allow to any character by focusing on the fire underneath the makeshift bathtub instead of staring at said character.
Oxygen Meter: In Lost in Blue 2 onwards, characters have a limited swimming ability.
Pixel Hunt: In the second Lost in Blue, the last slot in the plant section of the glossary is a dandelion located in a corner of a certain area of the island that is inaccessible until you get really far along in the game. You have to go hunting for a little weed that is almost indistinguishable from the background. And even though a little box pops up whenever you walk over an item, it's still agonizingly hard to find.
Just barely subverted from being too big of a pain, as it's slightly larger than the static, unobtainable dandelions. Although you wouldn't notice without looking for it.
Poison Mushroom: There are eight different kinds of mushrooms that you can find. Their effects differ from game to game; some will burn your throat and thus make your thirst meter go down faster, some will keep your energy meter from going down, some will induce stomachaches, and some will do nothing. Which is which is randomized from playthrough to playthrough, though there are certain ways to tell which is which without chowing down.
Lost in Blue 2: Due to the complaints about the inequality of the first DS game, Lost in Blue 2 features a female protagonist that has abilities which complement those of the male character. In this game the female character is more of an Action Girl, who excels in some non-traditionally female activities like hunting and swimming.
Lost in Blue 3: Better than the original, a step down from Lost In Blue 2, and but not as bad as first impressions. Every kid has their own set of skills. Females have full cooking skills, while males can climb better and hunt. All other skills are unique to the character or shared. The first two kids are very typed though.
Lost in Blue: Shipwrecked: About the same as 3, and she comes with a pet dog to boot. Lucy can either be left home while Aiden forages, or can come along to help explore.
Team Pet: The monkey in Survival Kids, which you get to name. Shipwrecked also has a dog.
Videogame Cruelty Potential: In the original Survival Kids, you can feed your partner character anything at all—it won't harm them. If you're feeling mean, you can stuff them with toxic mushrooms or raw seafood.
It's possible to feed other characters in the Lost in Blue games poisonous food, but doing so may net you a game over.