Lost Island HD, aka Tiny Tribe, is like an iPhone and Android game version of Lost, except a little more light-hearted and less full of weird numbers and hatches. But like the television series, Tiny Tribe puts you in charge of a series of explorers whose plane crashed on a small island full of discoveries, so while you're there, you might as well go deeper and see what you can find. Diamonds (or Gems, depending on what mood the game is in) are the premium currency of the game, and they are the only one of the currencies in this game that actually costs real money to buy.
WP - "Water is the main source of "energy" in Lost Island HD, previously known as Tiny Tribe. Every single action that you do in the game costs water to do, and once you run out of water, you're pretty much out of luck until you can find away to replenish your water. You can get free water, though, and continue playing the game for as long as your heart desires."
