I have this game engine...

Mon Nov 2 01:12:46 PST 2015

On Sunday, 1 November 2015 at 17:07:17 UTC, Joseph Rushton 
Wakeling wrote:
> Wow.  That sounds like it could have uses far beyond games -- 
> I'm thinking Erlang-style hot-swapping of components of 
> super-high-uptime (web) services ...

For D1 there was DDL 
http://www.dsource.org/projects/ddl/wiki/AboutDDL that could load 
and relocate object files as dynamic libraries.