If your looking for a PK style server, I would suggest making your own.
Theres nobody out there at the moment whom I am aware of that is currently creating any PK style servers.
Read through this guide
>> CLICK HERE <<
That will give you everything from the basics to creating your own server step-by-step (only 2.3).
You can create maps using "MapEdit"
>>CLICK HERE TO DOWNLOAD MAPEDIT <<
Your best bet with MapEdit, would be to fiddle around with it.
Start by clicking "New" and enter how many cells you want the map to be e.g. 200x200.
Fiddle around with the buttons & figure out what they do.
That's the best way to get to know about Map Edit.
It's pretty easy once you learn the basics. (I don't map much so I'm pretty rubbish at it)
If you are looking to learn coding for mir, read through this guide
>> CLICK HERE TO READ GUIDE <<