🚀 go-pugleaf

Sounds like you had a really old version of Empire there.
Like the square map, pre-food version.  Now that's old.
After that came the current edition (of which there are
now two versions).  The current edition has a hex-map,
food (you have to feed every sector), and those ''new''
commodities (like dust, lcm, and hcm) which were already
explained in another followup.  It also has nukes.  The
new version (April 1984) fixes many bugs (including the
famed spy and aircraft carrier bugs), has done away with
the defend command (now, every fort within range defends),
has added the nuke command (to get a report on nukes),
and has switched the dust-->bar process from the gold mines
to the banks (used to be that dust sitting in a gold mine
automatically hardened into bars, which could never be
crushed back to dust except by Deific intervention; now,
the only way to make bars is to ship the dust to a bank;
much more useful to have dust than bars anyway.), among
other things.