Hunger

Note that Hunger and Energy are different things. Hunger is only related to FEP bar. Energy is different thing.

There are currently two items in the game that can reduce your Hunger: Burrower Beans and Salt Crystal.

Hunger Levels

Unlike legacy haven hunger levels are NOT effected by ingame activities other than eating foods. Hunger level only decreases over real time depending on your hunger level.

Each food has a hunger value that adds up when eaten to change your Hunger Level once at 100%. Each subsequent hunger level has a lower "Food efficiency" bonuses, but takes less time to return to a lower hunger level.

Hunger Level	Food Efficiency	Approx time to lose 1% hunger	Approx time to lose 100% hunger	Variety Bonus	Variety Example @15 max stat
Ravenous	300%	2 hours	200 hours, 8 days 8 hours	1.097	28.3%
Famished	200%	1 hour	100 hours, 4 days 4 hours	0.894	23.1%
Hungry	150%	20 minutes	33.3 hours	0.632	16.3%
Content	100%	10 minutes	16.67 hours	0.602	15.5%
Full	90%	3 minutes	5 hours	0.447	11.5%
Stuffed	75%	46 seconds	1.25 hours	0.315	8.1%
Overstuffed	50%	7 seconds	0.19 hours

• Times are in Real/?/Game time. [Verify: Real-time or Game-time.]

Food Efficiency

This value is effectively the same as the "food event bonus" also given on some Symbel. It multiplies the FEP value of the food you eat to be either positive or negative by the percentage shown. It also positively effects Variety bonus see below

Effect of Food Quality

As of world 16. The hunger(appetite) value of a given food is now based on the food total(?) FEP value, the food tier level, and the food quality. HnH Post: ref

For most foods the game uses 5 general food tiers, each with its own fixed FEP-to-Hunger modifier value. For some foods it can use a different HM value. (?:higher tier then 5 only)

Tier	HM-Value	q10 hunger
1	5.00	0.20
2	6.25	0.16
3	7.50	0.13
4	8.75	0.11~
5	10.00	0.10

The hunger quality modifier uses the square root of the general used QM modifier. Making the hunger value double at quantity 160. $QM={\sqrt {\frac {Q}{10}}}$

For food that only has Fep+1 cases the formula is: $Hunger={\frac {{base}FEP/HM}{\sqrt[{4}]{\frac {Quality}{10}}}}$

For food that contain Fep+2 cases ... (See talk for now)

(Note: The new hunger-tiers system in not included in RoB-wiki food pages. Not yet at least, Will see. .MvGulik. 19:26, 14 July 2025 (UTC) )

Variety Bonus

Jorb posted that variety bonus effect by food efficiency here [1]. This bonus works simularly to legacy where each new food type eaten will decrease the amount of FEPs in order to level-up an attribute. It is increased by higher food efficiency, but is also reduced by your highest Base attribute (max stat).

Variety math and example

To work out the variety bonus at Famished's 200% food efficiency, we take the value from the chart and multiply it by the squareroot of our example max stat 15:

$0.894*{\sqrt {15}}=3.46$

This means that our fep requirement is reduced by 3.46, which is 28.3% of our max fep requirement of 15. If our max stat is 40 the reduction is instead 5.6, which is now only 14.1% of our max.

Symbel Bonuses

Eating at a table and chair provide hunger reductions. Equipping the table with various Symbel items further improve the reduction. Please see the appropriate articles on specific item values.

The match is fairly straightforward of hunger filled times the table's displayed hunger mod (when sitting in a chair, not just having the table open). For example, Johnny Hearthlander's table provides a 75% hunger bonus. The food he eats fills 10% hunger. Modified, it will only be 7.5%

Game Development

• Misty Badger (2023-11-26)◎ >"Fixed "Hungercide". Hunger level is now inherited from your immediate ancestor."

• World 14 (2022-08-12)◎ >"Made it so that Hunger now decays by the cube root of the effect level, rather than the square of it, causing the more powerful levels (e.g. 300% modifier) to decay significantly slower, and the lower levels of effect (e.g. 50% modifier) to decay correspondingly faster. Aiming to push functional hunger levels away from guaranteed 300%."