Dear Settlers,
The next update includes two brand new additions to your daily Settler life: a new Weekly Challenge system, and two Training Ground buildings to help with Barrack production. In this Dev Diary, we'll go into both of these in more detail so you can get the most out of them once they hit your servers in the future:
First, let's talk about the new Weekly Challenges! When you first investigate this new system at level 26, you'll be given a random challenge out of a pool. You'll then have 167 hours (a week) to complete it: if you succeed, you can begin a new challenge immediately. This means that you can pursue and complete these challenges as often as you'd like so long as you succeed. If you fail a challenge by not completing it within the allotted 167 hours, it will fail and you will then be able to accept a new challenge.
Let's take a look at the challenges that will be available:
Challenge Description Epidemic A ship of the Maya arrives on your shores. Inflicted with a mysterious epidemic sickness, they seek your help in order to contain and cure the outbreak. Kingdom Defence Having demonstrated great millitary leadership, generals from nearby kingdoms have sent a ship to your shore in order to improve their own millitary might. Town Construction Marvelling at your beautifully constructed towns, a mayor from a distant land would like your help in learning your techniques so he can build his own idillec town. Archaeological Excavation While preparing some land for building development, an ally stumbled upon a huge ancient structure buired in the earth! They need you help to excavate it.
All of these challenges will contain stages which ask you to accomplish things such as producing resources, completing adventures creating and applying buffs etc. What they do not contain is any luck-based tasks, such as treasure hunts; this means you can more predictably complete these challenges with some consistency, without the fear of running out of time due to bad luck.
So what rewards can you expect for tackling these Weekly Challenges? XP and a brand new currency: Tokens! These can be used to upgrade your residence buildings, which will provide you with a nice alternative method in giving you a bump in the population department. Here's the token payout for each level range per challenge completed:
Level Range Token Payout 26-35 9 Tokens 36-45 13 Tokens 46-55 17 Tokens 56-65 21 Tokens 66-75 25 Tokens
These tokens are not tradable.
Name: Training Grounds (not tradable, giftable*, not deletable) 
Name: Elite Training Grounds (not tradable, giftable*, not deletable)