Installing Rift in a MultiMC instance

1. Make a new instance in MultiMC with with the wanted version of Minecraft—in our case, Minecraft 1.13.
2. Click Edit Instance—it should open the Version page of the instance.
3. Click Add Empty.
4. Set uid to org.dimdev.rift and name to Rift.
5. Select the newly created component and click Edit—this should open the file in a text editor.
6. Edit the JSON to look like one of the examples below, then save the file.
7. Launch the instance from MultiMC.

If the example doesn't fit the Rift version exactly, change the version. For example, replace all occurrences of 1.0.2-33 with 1.0.2-35.

You can use the version page to check the file for errors—obvious mistakes will show up in the Version page as soon as you click the Refresh button.

If the JSON file doesn't open in a text editor, make sure your operating system is set up to open .json files in one first.

Examples

Rift 1.0.2-33 (Minecraft 1.13)

{
    "+tweakers": [
        "org.dimdev.riftloader.launch.RiftLoaderTweaker"
    ],
    "formatVersion": 1,
    "+libraries": [
        {
            "name": "org.dimdev:rift:1.0.2-33",
            "url": "https://www.dimdev.org/maven/"
        },
        {
            "name": "org.dimdev:mixin:0.7.11-SNAPSHOT",
            "url": "https://www.dimdev.org/maven/"
        },
        {
            "name": "org.ow2.asm:asm:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "org.ow2.asm:asm-commons:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "org.ow2.asm:asm-tree:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "net.minecraft:launchwrapper:1.12"
        }
    ],
    "mainClass": "net.minecraft.launchwrapper.Launch",
    "name": "Rift",
    "releaseTime": "2018-07-18T15:11:46+00:00",
    "requires": [
        {
            "equals": "1.13",
            "uid": "net.minecraft"
        }
    ],
    "uid": "org.dimdev.rift",
    "version": "1.0.2-33"
}

Rift 1.0.1 (Minecraft 1.13)

{
    "+tweakers": [
        "org.dimdev.riftloader.launch.RiftLoaderTweaker"
    ],
    "formatVersion": 1,
    "+libraries": [
        {
            "name": "org.dimdev.rift:Rift:1.0.1",
            "url": "https://www.dimdev.org/maven/"
        },
        {
            "name": "org.dimdev:mixin:0.7.11-SNAPSHOT",
            "url": "https://www.dimdev.org/maven/"
        },
        {
            "name": "org.ow2.asm:asm:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "org.ow2.asm:asm-commons:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "org.ow2.asm:asm-tree:6.2",
            "url": "http://repo1.maven.org/maven2/"
        },
        {
            "name": "net.minecraft:launchwrapper:1.12"
        }
    ],
    "mainClass": "net.minecraft.launchwrapper.Launch",
    "name": "Rift",
    "releaseTime": "2018-07-18T15:11:46+00:00",
    "requires": [
        {
            "equals": "1.13",
            "uid": "net.minecraft"
        }
    ],
    "uid": "org.dimdev.rift",
    "version": "1.0.1"
}

Acknowledgements

This page is based on the MultiMC5 wiki page MultiMC and Optifine.