Changes

* In [[Winter]] only: 28-50% chance of a [[Winter Root]] or a [[Snow Yam]] (Winter Root is 50% more likely than Snow Yam in all locations).  Not possible in the [[Desert]].

* In [[Winter]] only: 28-50% chance of a [[Winter Root]] or a [[Snow Yam]] (Winter Root is 50% more likely than Snow Yam in all locations).  Not possible in the [[Desert]].

* In [[Spring]] only: 3-6% chance of 1-5 [[Rice Shoot]]s.  Not possible in the [[Desert]] or [[Beach]].

* In [[Spring]] only: 3-6% chance of 1-5 [[Rice Shoot]]s.  Not possible in the [[Desert]] or [[Beach]].

* A location-dependent list of other items. Some artifacts can reappear in this second list, but most of the items are resources. The percentages provided are valid for summer and fall (values are 50% smaller in winter and 6% smaller in spring). 1-3 copies of each item are possible.

* A location-dependent list of other items. Some artifacts can reappear in this second list, but most of the items are resources. The percentages provided are valid for summer and fall (values are generally 50% smaller in winter and 6% smaller in spring).

** [[Copper Ore]]: [[Pelican Town]] (14%), [[Railroad]] (11%), [[Bus Stop]] (9%), [[Backwoods]] (7%), [[Cindersap Forest]] (5%), [[the Mountain]]s (5%)

** 1-3 [[Copper Ore]]: [[Pelican Town]] (14%), [[Railroad]] (11%), [[Bus Stop]] (9%), [[Backwoods]] (7%), [[Cindersap Forest]] (5%), [[the Mountain]]s (5%)

** [[Coal]]: [[Backwoods]] (5%), [[the Mountain]]s (4%), [[the Farm]] (4%)

** 1-3 [[Coal]]: [[Backwoods]] (5%), [[the Mountain]]s (4%), [[the Farm]] (4%)

** [[Gold Ore]]: [[The Beach]] (4%)

** 1-3 [[Gold Ore]]: [[The Beach]] (4%)

** [[Stone]]: possible anywhere (8-20% depending on location)

** 1-3 [[Stone]]: possible anywhere (8-20% depending on location)

** [[Clay]]: possible anywhere (24-60% depending on location)

** 1-3 [[Clay]]: possible anywhere (24-60% depending on location)

==Spawning==

==Spawning==

Overnight, artifact spots can randomly spawn at a rate that is highly dependent upon the map.<ref name="day_update" /> Other than during [[Winter]], artifact spots will only appear in tillable soil, i.e., yellow/brown tiles that can be tilled with a [[Hoe]].  In Winter, they can also appear in grass-type tiles (i.e., tiles that are colored green during non-winter months; this designation is not based on whether or not harvestable [[Grass]] is growing).

Overnight, artifact spots can randomly spawn at a rate that is highly dependent upon the map.<ref name="day_update" /> Average spawn rates range from 0.1/day ([[Cindersap Forest]], [[Bus Stop]]) to 1/day ([[Desert]]). Other than during [[Winter]], artifact spots will only appear in tillable soil, i.e., yellow/brown tiles that can be tilled with a [[Hoe]].  In Winter, the spawn rate is higher and they can also appear in grass-type tiles (i.e., tiles that are colored green during non-winter months; this designation is not based on whether or not harvestable [[Grass]] is growing). Winter-time average spawn rates range from 0.4/day ([[Railroad]]) to 1.4/day ([[Desert]]).

The primary limit on the chance of artifact spots appearing is the fraction of map tiles that are valid locations, which is why the likelihood varies significantly between maps (it's also one reason why they're more common in winter).  Existing artifact spots also limit the spawn rate, because new spots are only possible when the existing number is less than a threshold value. In general, that threshold is two; on the [[Farm]] the threshold is one. In [[Winter]], the threshold for all locations increases to five. However, spawning is calculated after possible [[#Removal|removal]] of any existing spots, so artifact spots that are left in place do not completely prevent new spawning.

The primary limit on the chance of artifact spots appearing is the fraction of map tiles that are valid locations, which is why the likelihood varies significantly between maps (it's also one reason why they're more common in winter).  Existing artifact spots also limit the spawn rate, because new spots are only possible when the existing number is less than a threshold value. In general, that threshold is two; on the [[Farm]] the threshold is one. In [[Winter]], the threshold for all locations increases to five. However, spawning is calculated after possible [[#Removal|removal]] of any existing spots, so artifact spots that are left in place do not necessarily completely prevent new spawning.

Artifact spots never spawn in hidden tiles behind buildings, bushes, non-removable trees, or other permanent features.  However, they can spawn in difficult-to-see locations behind removable trees (ones the player can chop down).  They never spawn in tiles where other objects are present (chests, trees, equipment, weeds, debris, etc.).  Thus, placing equipment or planting trees in tillable soil can reduce the chance of artifact spots spawning, but only if a large fraction of the tiles are occupied.

Artifact spots never spawn in hidden tiles behind buildings, bushes, non-removable trees, or other permanent features.  However, they can spawn in difficult-to-see locations behind removable trees (ones the player can chop down).  They never spawn in tiles where other objects are present (chests, trees, equipment, weeds, debris, etc.).  Thus, placing equipment or planting trees in tillable soil can reduce the chance of artifact spots spawning, but only if a large fraction of the tiles are occupied.