Coin Idle - Expeditions

 I figured out what the window showing the continents is for.  This is where you can go on expeditions.  First, when you click a continent, it shows the required level of coins you need to reach to unlock each one.  Right now on my phone I have only 9 of the 20 coins needed to unlock the world icon.  You need 40 for Australia, 70 for Africa, 100 for South America, and 150 for Europe.  On my tablet, I unlocked the world map and got to the expeditions window.

Let's divide this window into a top bar, main area and bottom bar.  The top bar has an Expedition box, Probability box and Total Coins box.  In the Expedition box, you use arrows to choose which expedition to take and the Probability area shows what you might get and your chances of finding items.  The Total Coins box shows your goal: to complete a set of coins.  At first you need 9 coins to complete the set; I'm not sure if other continents have different goals.  Anyway, you start by choosing an expedition.

From there, you go to the main area and hire different types of workers by clicking the small cost button beneath them.  Next to that is the Coin Dealer and a silhouette wearing a tie which is your Personal Data.  In Personal Data you can level up some stats by clicking the cost buttons next to them.

The bottom bar has a dirt patch, a coin button, a water bottle button where you can buy water bottles, and a big pickaxe with an energy bar beneath it.

When ready, click the expedition cost button on the top bar to begin.  These take 30 or 60 seconds, and there's a chance of finding coins along the way.  You can also spam-click the pickaxe button at bottom right to help by mining the patch of dirt.  The little coin button changes while mining but it doesn't seem to do anything.   When the energy bar hits zero it will recover to full by consuming one of the water bottles.

When done, you get some number of coins, and the goal is to complete a set.  If you end up with any duplicate coins, you can sell them to the Coin Dealer at the middle of the layout by clicking the box beneath the icon.  Sometimes you do come out ahead, but it's fun to see what comes up.  There are even secret pouches with even more coins.

Note: the way auto-merge works is that when it's turned on (the tiny arrows are yellow instead of gray), when the board is filled up, is merges as many coins as possible and subtracts one from the number of auto-merges remaining.  In Atom Idle it subtracts a point for EACH merge.