@knotwork a post I came across today from 2010 by "BitLex" the Bitcoin Forum user who ran the linden dollar L$ for bitcoins exchange website bitlex.co.cc to give bitcoiners a way to get lindens for use in Second Life. The interesting part is how OpenSim is mentioned as a way to run your own 'server' and thus have ownership of the items in the 'OpenGrid' of yours (in your server)... Seems to be something "Bitcoin" software and its p2p protocol could do as it acts like a distributed compute "server" and processor over its cumulative network.
Disclosure: @knotwork is OG he already knows this - but this is more for any Hive folk who stumble across Mark's amazing entries on the Hive blockchain this past month ;)
RE: Maybe the Galactic Milieu CAN integrate non-'free open source' games afterall...