Ye Olde Server Pack (YOSP) is a fairly lightweight pack intended to recapture the feeling of old packs from the earliest versions of modded Minecraft, specifically those on Minecraft 1.2.5. It made made for use on a private server, hence the name, but will work perfectly fine in singleplayer or for use on your own server. In updating to a modern version, we included some newer mods that fit the theme of the original packs, along with many of the quality-of-life mods now available. (Not to mention some much nicer terrain generation, courtesy of Biomes O' Plenty and Alternate Terrain Generation!)

YOSP includes several tech and magic mods, allowing for multiple styles of play. The main tech mods available are Buildcraft, IC2, Mekanism, and Immersive Engineering. IC2 Experimental's recipes have been extensively changed to be more similar to IC2 Classic and to generally reduce microcrafting. Mekanism has been heavily nerfed (especially power generation options) to keep it balanced with IC2. Applied Energistics is excluded in favor of Logistics Pipes, as a complicated pipe network stretching throughout your factory is iconic to older packs, and very much something we want to encourage.

On the magic side, options include Thaumcraft (with addons Thaumic Tinkerer, Forbidden Magic, and Automagy), Botania, and Witchery. Most magic mods tend to integrate well with the vanilla experience and support, rather than overpower, other options, so including several felt like a natural fit for the pack. ProjectE is also included, since it's predecessor Equivalent Exchange 2 was a core inclusion in many old packs. However, the recipes for the Energy Condenser and Transmutation Tablet have been made significantly more expensive in an effort to balance the mod.

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For SSP, use World Type 'ATG - Alternate' for proper terrain.

For servers, use World Type 'ATG'.

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v1.4 Server Files (the files aren't being processed by CurseForge, so this is an alternate link)

Sphax PureBDcraft mod textures (doesn't include vanilla textures)

Ye Olde Server Pack

AgriCraft

Alternate Terrain Generation

AppleCore

Aroma1997Core

AromaBackup

ASP + GS Patcher

Automagy

BdLib

Better Builder's Wands

BetterFps

BiblioCraft

BiblioCraft: BiblioWoods Biomes O'Plenty Edition

BiblioCraft: BiblioWoods Forestry Edition

BiblioCraft: BiblioWoods Natura Edition

Biomes O' Plenty

Botania

Buildcraft

Buildcraft Compat

Carpenter's Blocks

Chisel