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A video game hunger mechanic in general is Wizard Needs Food Badly.
Narrowing it down further into "hunger meter" seems too specific as there are any number of ways to portray hunger. It could be a meter. It could be a number. It could be a combination of stomach fullness and calorie surplus. It could be a hidden value and you only know by the characters complaining about hunger. It could be that hunger is not displayed but if you miss a meal then a starvation meter starts to climb.

Is there a trope for when there's a bar that shows how hungry you are and fills back up when you eat food? I can't find it on the Stat Meters index. I have 3 examples so I could pitch it to TLP if it's not here already
Edited by moefoxes