If anyone is
interested in multi-user games, I have the original source of
AberMUD, printed on fanfold, implemented in B for GCOS3 on a Honeywell L-66
(a machine which was literally advertised as being able to withstand grenade
detonations within N feet)
Yes! I am very much interesting in getting my eyes on that early B
version of AberMUD (and any other B code for that matter.)
There is also the very first MUD written in Essex BCPL. The Essex
compiler was recently unearthed.