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I've been working on a survival world in Minecraft 1.14 recently and I've considered installing some of the datapacks used in Hermitcraft S7 (Vanilla Tweaks, by Xisumavoid: https://vanillatweaks.net/picker/datapacks/), and they seem to be worth installing. However, I do have a few general questions about datapacks since I haven't really seen the installation process or used them before.

  1. How do you install a datapack? Is there some sort of datapacks folder, and is this for all your worlds regardless of version (of course not in previous versions w/out datapacks), only based on the version you put it in, or predominantly world-based?

  2. What changes do datapacks make to your vanilla world, other than adding their intended feature? Do they change the world to become unplayable if you aren't using the datapack/unplayable for other players who don't have the datapacks, and will they cause any issues with your playing experience (such as FPS, lag, etc.)?

  3. Will datapacks pose any risk to my world? Will they cause corruptions or break the world somehow? Or can I rest assured that it will run essentially like vanilla minecraft with no added risks?

  4. Will datapacks made for versions higher than your current one work? I am planning on using the Wandering Traders datapack that unfortunately is only for 1.15, so should I use the datapack like normal, or should I stay away from it to avoid corruptions or glitches? Also, what happens if I join the world with the datapacks (if possible) in a lower version (like 1.13?)

  5. Do datapacks work more like vanilla minecraft (like plugins), or do they work more like mods (game-changing additions)? It seems like they mostly just seem to be like plugins, since they use only vanilla items and features, but just wanted to clear this up before I install them.

  6. Should I backup my world before installing datapacks? I'd like to be safe than sorry. Also, can datapacks corrupt other worlds, or potentially Minecraft in general (requiring some sort of hard reset)?

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How do you install a datapack? You paste the extracted data pack folder into the datapacks folder in your save (.minecraft/saves/your_save/datapacks). The data pack is only applied to the world in which you paste it in and it will work across all versions that it was designed to support.

What changes do datapacks make to your vanilla world, other than adding their intended feature? They don't make any changes that would make the world unplayable without the data pack. Also, all data packs installed on the server apply to all players so they don't have to install them locally.

Will datapacks pose any risk to my world? Data packs are 100% vanilla. The only risk they can pose is if there is a bug in the code and the data pack summons thousands of entities or something like that and the server crashes (which shouldn't happen if the data pack is written properly).

Will datapacks made for versions higher than your current one work? That depends on which commands and mechanics the data pack uses. For example, if the data pack uses a command that was added in 1.14 and you run it in 1.13, the line with that command will just throw an error and do nothing. However, this might cause more bugs in the code so I don't recommend doing that.

Do datapacks work more like vanilla minecraft (like plugins), or do they work more like mods (game-changing additions)? More like plugins. They can only work with what's already in the game.

Should I backup my world before installing datapacks? Well, you should keep backups of your worlds anyway.

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  • Thanks for your help! Good to know that they're relatively stable to use, and they seem a lot easier to use than I initially expected. – Honk May 21 at 15:31

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