If you are using a mod which need a newer version of the Minecraft Forge and you load the game it will display a screen that will say which mods aren't compatible and which minimal Forge version you will need. When you download a mod you should do it on pages where it's displayed the Minecraft Forge version requisite like (I think) curseforge or another page.
Usually (I would say the 99% of times) a newer version of the forge will support mods with a lower requisite. Since a while I don't play minecraft but I am sure it is still the same method.Įach mod has its own requisite of the minecraft forge version, but usually all the mods use the same (so I isn't a big problem).
