I am pleased to announce that Mekanism for 1.20.1 is here and has lots of bug fixes, new textures, and some Quality of Life changes.

Before getting to the minimum modloader requirements of Mekanism 10.4.0, I think it makes most sense to address our plans going forwards in regards to MinecraftForge vs NeoForge. All versions of Mekanism for 1.20+ will be targeted for NeoForge.

This means for 1.20.2+ where the two modloaders are going to diverge we will only be supporting NeoForge, but for 1.20.1 we will not go out of our way to be incompatible with MinecraftForge and as such Mekanism 10.4.0’s minimum Forge version is marked as 47.1.1.

In order to fix parts of our HUD occasionally overlapping hotbar text we recommend using NeoForge 47.1.35 or higher.

The MinecraftForge version that contains this fix is 47.1.14, though a lot of mods don’t support Forge versions greater than 47.1.3 due to MinecraftForge making numerous breaking changes after that point.

As far as we know none of the features Mekanism uses have been broken yet (so it should work on the latest MinecraftForge version), but that doesn’t preclude the possibility that MinecraftForge will end up making more breaking changes, which is why we recommend using NeoForge even for 1.20.1.

Now onto some of the highlights of the Mekanism 10.4.0 release (please make sure to check the changelog on curseforge for the full list of changes):

• Removed Material filters, these were a filter type that confused most players as they were based on the internal block materials blocks had (in 1.20 blocks no longer have backing material)

• Added support for creating chemicals via JsonThings

• Changed how Robit skins are created and registered so that they can be defined via datapacks

• Rewrote how our computer integration is internally implemented and also added better documentation

• Computer peripherals now have `help()` and `help(methodName)` methods to see documentation in game

• Breaking change to how we save world data. To transfer old data, rename data files relating to mekanism to have “mekanism_” in front of them. For example data/QIOFrequencyHandler.dat -> data/mekanism_QIOFrequencyHandler.dat

• Breaking changes to how some bits of our API are accessed so that we can take advantage of java service loaders

• Fixed transmitters not properly saving their contents under specific circumstances

• Reworked how multiblocks persist their contents to be more consistent

• Changed how inventories of personal storage items (barrels and chests) are saved to make use of world save data (ItemStack data will be smaller)

• Split the creative tab into a separate tab for each module

• Added a radial menu for the blasting unit

• Fixed some blocks not being properly fluid loggable

• Allow force extracting Osmium from the Osmium Compressor using pressurized tubes

• Don’t allow enchanting Electric Bows with Flame and use more modern systems to treat their flame mode as if they are enchanted with flame (this should improve compat with other mods)

• Split the Formulaic Assemblicator’s fill and empty grid button into two separate states so it is more clear what action will be performed on press

• Reactor Logic Adapters are no longer able to power neighboring logic adapters in the same multiblock

• Improved side and transporter config windows to also display what block is on what side

• Improved the map colors of various blocks

• Made carbon tinted a slightly darker color so that it is easier to see in GUIs

• Updated a bunch of item and block textures, as well as some models (for example factories now have 3D models)

• Slightly adjusted the colors that represent the five different tiers

Release Links:

• Mekanism

• Mekanism: Additions

• Mekanism: Generators

• Mekanism: Tools

Mekanism Discord

I am thinking of trying out fabric 1.20.1 lately but sadly there is no mekanism for that version.