@shibdib I like slack for chat, but one major drawback is that there is no history .. obviously in this forum there is not to much traffic but there are many topics that have very valuable content which would be lost if it would have been just discussed in slack.
There is even more going on in the screeps steam forum .)
Speaking of a "fully featured private server" for Arena -- no, it is not planned. But at some point we will publish tools to create and run your own arenas. These tools will contain the minimal runtime to test mechanics locally. No multiplayer connectivity will be available there, and when finished, such custom arenas should be deployed to our cluster to run real multiplayer matches.
