Saving Assets
Saving assets in Forge is an essential part in retaining the progress you've made. From forge you can save a map, prefab or a mode.

Retaining progress through the creation of assets is essential for any creator working within the Forge editor.
Saving Maps
To save a map, users have two primary options: performing a quicksave or creating a save with a custom note. A quicksave can be performed using Ctrl+S or by holding Y (Hold) → Quicksave, which adds an entry to the version history labeled "Quicksave." To create a save with a custom description, users must open the start menu, select "Save Map," input a version note (up to 265 characters), and press Confirm.
The Start Menu can be accessed at any time using Esc/Menu, unless while in the node graph on keyboard, when the start menu can be opened with F1.
File Size Constraints
Maps have a maximum file size limit of 10.00 MB. If an attempt is made to save a map that exceeds this limit, a "Maximum file size exceeded" error message will appear. This notification displays the current file size and instructs the player to reduce either the object or scripting content on the map.

Prefabs and Modes
Saving Prefabs
To save a prefab, the user must select an existing prefab while in Monitor Mode and use E (Hold) or X (Hold) → Save Prefab. Like maps, prefabs are limited to a maximum file size of 10.00 MB. If the limit is exceeded, the saving process will not complete, though no error message is communicated to the player.
Saving Modes
The process for saving modes is similar to that of prefabs with one specific requirement: all objects making up the mode must be dynamic and contain a Mode Brain. When these conditions are met, the "Save Prefab" option changes to "Save Mode Prefab."
Modes also have a maximum file size limit of 10.00 MB; if this is exceeded, the save will fail without an error notification. When saving particularly large modes, the process may take tens of seconds and can trigger server-side lag that results in multiple identical versions being saved (sometimes upwards of 15). In these instances, the latest version after the surge should be utilized.
Source Data
Discord thread: Saving Assets
Contributors
Okom
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