Old School - Nethack

That made me want to go look at the Nethack code on Github again. It's always a bit fun, because everything's quite explicit, not hidden behind layers of abstraction like it tends to be in enterprise software.
I still haven't really tried to get into this game, but the detail of this comment in the code really appeals to me:

                 * 3.7:  New moon is no longer overridden by carrying a
                 * lizard corpse.  Having the moon's impact on terrestrial
                 * activity be affected by carrying a dead critter felt
                 * silly.
                 *
                 * That behavior dated to when there were no corpse objects
                 * yet; "dead lizard" was a distinct item.  With a lizard
                 * corpse, hero can eat it to survive petrification and
                 * probably retain a partly eaten corpse for future use.
                 *
                 * Maintaining foodless conduct during a new moon might
                 * become a little harder.  Clearing out cockatrice nests
                 * could become quite a bit harder.