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Legacy Connector

Run unmodified legacy mods from b1.7.3, 1.4.7, 1.5.2, 1.6.4, 1.7.10, 1.12.2, and 1.20.1 directly on NeoForge 1.21.1.
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Legacy Connector 0.3.8

File namelegacyconnector-0.3.8.jar
Uploader
KyleBeepKyleBeep
Uploaded
Oct 31, 2026
Downloads
54
Size
24.1 MB
Mod Loaders
NeoForge
File ID
9381498
Type
B
Beta
Supported game versions
  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:legacy-connector-1763521:9381498"

Learn more about Curse Maven

What's new

Legacy Connector 0.3.8: a big stability and 1.12.2 release, from a long overnight test pass of tech, magic, storage, world, space, mob and dimension mods in a real client.

1.12.2

  • Mod dimensions work. The Aether (and any mod registering a dimension through DimensionManager) becomes a legacyconnector:dim_<id> level; the Aether portal teleports you in.
  • Blockstate translation was rewritten (Forge forge_marker, defaults, submodels, multipart, state mappers): Mekanism, Immersive Engineering, Tinkers' Construct, XNet and Refined Storage blocks now have their real models instead of purple cubes.
  • Blocks with transparent textures use cutout or translucent render layers (Mekanism machines no longer draw black).
  • Blocks from ITileEntityProvider mods (RFTools, XNet) get their tile entity when placed; placing several items in one tick no longer fails.
  • OpenComputers gets past loading: Forge's bundled typesafe-config and akka libraries and javax.activation are provided, LWJGL 2's OpenAL classes exist.
  • Player and living drop events reach mods (Tombstone makes graves); vanilla blocks and items have their 1.12 unlocalized names; com.mojang.realmsclient.gui.ChatFormatting exists (Kindred Legacy's GUI).
  • Scape and Run: Parasites: Sodium and Entity Culling no longer cull the mobs, area clouds use their 1.12 colours.

1.7.10

  • No more server hangs entering mod dimensions (generation writes skipped neighbour updates that waited on unloaded chunks).
  • Vanilla food items are real ItemFood objects (Witchery's Witches' Oven cooks again), vanilla blocks and items report their 1.7.10 unlocalized names (Mystcraft symbols), Guava ClassPath scans legacy jars (Logistics Pipes packets), Java 8 UUID parsing (More Planets), onItemUseFirst flows.
  • Right-clicking legacy armor equips it, openGui accepts a mod id string (Fisk's Superheroes menus and the Flash speed ability work in game).
  • Tools get their attack damage from getAttributeModifiers, mod shears shear (sheep, mooshrooms, leaves), step height, weather setters, fire and lava immunity events (ProjectE report, #112).
  • Reika blocks draw in place (Tessellator translation reset), MineFactory Reloaded grinders work (WorldServer constructor, CoFH proxy fix), crash fixes for off-thread texture calls (a mod initialising on the loading thread aborted the JVM), Extra Utilities textures, Twilight Forest critters and Chisel auto chisel renderers.
  • Verified in game this run: IC2, BuildCraft, Thermal, Railcraft, Big Reactors, the Reika mods, Thaumcraft (crucible, infusion, all 102 arcane recipes, Thaumonomicon), Witchery (oven, spinning wheel, kettle, distillery, cauldron), Botania, Forestry bees, Traincraft, Galacticraft, HBM and the mod dimensions. See the new wiki page "Gameplay test log".

Known gaps: 1.12.2 container GUI backgrounds and the JEI overlay textures, mod biomes in 1.12.2 dimensions are plains, some ProjectE items (EMC values, item entity orbs), Thaumcraft arcane lamp near y<5 in deep worlds.

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