This app simulates the random number generator used in Stardew Valley and makes "predictions" about the game after reading the save file. Currently, the information predicted includes special mine levels (mushroom floor & infestations), items sold by the traveling merchant & Krobus, results from cracking geodes, the train schedule, and the gift exchange of the Feast of the Winter Star.
All changed & added content from the version 1.3 should be supported; 1.3-specific features will only appear in the results if either the save is detected to be from that version or the app is launched with a URL id parameter. Please report any bugs, suggestions, or other feedback to the topic in the official forums.
Select a save file to check:
Please use the full save file named with your farmer's name and a 9-digit ID number (e.g. Fred_148093307); do not use the SaveGameInfo file as it does not contain all the necessary information.
Default save file locations are:
This calendar showss the prediction of Mushroom Levels and Monster Infestations in the Mines. These special levels persist throughout the day, even when the contents of the level reset, allowing multiple trips to gather mushrooms or fight monsters.
Inventory list for the traveling merchant. The merchant operates a cart in Cindersap Forest every Friday and Sunday (6am - 8pm) and also a boat during the winter Night Market. Results can be browsed by week (the Night Market is treated as a separate week) or searched using a case-insensitive substring (regular expression wildcards are allowed.)
Partial inventory list for Krobus who sells items in the Sewers. While his stock is static on most days, there is a random fish sold on Wednesdays and a random cooked dish sold on Saturdays; these items can be predicted and are listed below. Results can be browsed by week or searched using a case-insensitive substring (regular expression wildcards are allowed.)
This calendar shows the prediction of which wallpaper and flooring items are available at Pierre's General Store and the Joja Mart. This is mainly useful for those who use a bug that causes wallpaper to be interpreted as another item for various situations such as bundles, crafting, and use in machines.
Predicted results from cracking open all types of geodes at Clint's Blacksmith Shop. The "number opened" is a cumulative count across all types. Results can be browsed twenty at a time or searched using a case-insensitive substring (regular expression wildcards are allowed.) Note that in multiplayer, each player's geode count is tracked separately; the browse results are initially set and highlighted based on the host's count.
Note: If you play with the Artifact System Fixed mod and enable its geode changes, the predictions listed here may not be accurate.
This calendar shows the predicted train spawns on the Railroad map. The time of the train can be predicted, but the type of train cars and amount of dropped items cannot.
Note that a train will not spawn on the first day after a save is loaded or reloaded.
This calendar shows potential overnight events on the farm. These events will not occur if there is a player wedding the next day, and they will also be overridden by a restoration event from the completion of a full Community Center room or a Joja Community Development purchase. Most of these events also have other checks they must pass to actually trigger (such as finding a suitable location), so they are not 100% guaranteed; in particular the strange capsule and stone owl events are still extremely rare even when the calendar shows them to be possible.
Note: The app may misidentify the type of event in version 1.2 if the farmer has the possibility of having more children.
This shows the secret gift assignments for the Winter Star festival. The actual gift(s) the player(s) will receive cannot be reliably predicted, but a list of all the possibilities is provided.