How many mods can I download?

The Creation Engine, the game engine with which Fallout 4 runs, allows for 255 standard plugins, which includes the master plugin and all DLC. Creation Club Content, while official "mini-DLC" allows for up to 4096 plugins to load. For console users, these values were limited by Bethesda in 2017. It has not been officially stated why the limitation was imposed; however, this is a good thing for console users.

Enhance, Don't Overload

The objective while using mods is to use others' fanworks to enhance your gameplay. Overloading your load order and using too many mods that conflict can be a frustrating experience. A conflict-free load order is achievable. There are mods that will work with others, provided you do your diligence and do not overload your console with too many mods that don't work on your console.

Unfortunately, Fallout 4 was the test bed for Xbox mods, and the mods that first came out were not all optimized for the experience since very few of the mod authors who were publishing had even played on Xbox before.

Read all documentation carefully and observe the date the mod was created on Nexus. Just because the page was updated on the Bethesda site does not mean there was an update.

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Remember that there is no such thing as a 100% stable game.

Xbox

You may download up to a limit of 150 mods and 2 GB of space. Note that 2 GB is approximately 1.86265 gib, which is the unit of measurement used by the Bethesda.net website. Plan your space prior to downloading to avoid issues with not being able to download.

PS4

You may download up to 100 mods and 900 MB. Note that 900 MB is approximately 858.307 mib, which is the unit of measurement used by the Bethesda.net website. Plan your space prior to downloading to avoid issues with not being able to download.

PC

You may have up to 255 data files with the ESM and ESP extensions. You may have more with the ESL extension as they load differently than 'normal' data files. The ESP extension can be flagged as an ESL extension.

Load Order Worksheet

The Fallout 4 Load Order Framework Basic Template has a built-in calculator for your planning needs. You have full control over your load order and how you play the game.

Load Order Framework Basic Template
Fallout 4 Load Order Framework Basic Template gives you more control over your planning before you ever download a single mod.
Keep up with how many you download and how much GiB outside the game.

Additional Reading

Planning a Modded Play-Through
Fallout 4 Load Order Tips: Survive Load Order Disorder by planning your play through as you build your LO Framework.
How to Plan Your Load Order outside the game.
Understanding the difference between GB and GiB
The Differences Between GB and GiB.

Creation Kit Technical: Data Files



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