Every day Worldo travels to a different country. You have 6 attempts to discover where he is.
If a letter in your guess matches a letter in the correct country (regardless of the position), its tile will be green. If it doesn’t, it will be brown.
For example, if your guess contains two "A"s and only one turns green, that means the correct country has one "A" in it.
Additionally, after each attempt, you will see a hint: a tile showing the distance* and direction** between your guess and the correct country.
In the example above, the correct country is Greenland.
* Distances are calculated based on the approx center of both countries.
** Direction is calculated using a simplified version of the azimuth formula. It might not always be very precise or intuitive, specially on long distances.