Hunger

use hunger adds a depleting meter. It is a second metering extension, built from the same bands and announce modes as a rank ladder, over a severity value that climbs on its own.

use hunger, announce all
  grows 1 each turn
  peckish  at 30 says feeling-peckish
  hungry   at 60 says stomach-growls
  starving at 90 says the-gnawing
  fatal at 100

grows 1 each turn raises hunger severity by one on every turn. Each band is a bareword name at an absolute threshold, and it announces on the turn severity reaches it, exactly as a rank does. says <key> names a phrase from your own phrases block. A band with no says speaks the overridable platform line, and announce silent turns announcements off. The four modes read the same here as they do for scoring.

fatal at 100 is a death threshold above the top band. Reaching it ends the run through the same death path that kill the player uses. It is not a band, so it announces nothing of its own.

Eating lowers severity. A food item carries a nutrition value, and eating it subtracts that value from hunger. Food with no nutrition counts as zero and fills nothing. Recovery is a fall rather than a rise, so it is silent by design. If you want the player to feel the relief, announce it yourself from an on clause.

Severity starts at zero, below every band, so a fresh game reports nothing until the player first grows hungry. The value cannot fall below zero, and it is saved and restored with the world, so a reload does not send the player back to full.