Join
Join Indigo
Three steps: install a launcher and paste one link, ask for the whitelist, press Play. Written for someone who has never installed a modpack.
Already play, from before automatic updates? Bring your instance along once, and you never download a pack again.
Checking the server
- 1Install
Prism Launcher, then one link
Indigo.zip · a 4 MB instance that fetches the rest · Minecraft 1.21.1, NeoForge 21.1.248Install Prism Launcher (free, Windows, Mac and Linux), open it and sign in with the Microsoft account you use for Minecraft. If it offers to download Java, say yes.
Copy the link with the button below, then in Prism:
Add Instance → Import → paste the link → OK
An instance called Indigo appears. Press Play. The first launch takes a few minutes while it downloads Minecraft 1.21.1, the mods and the shaders. Every update after that arrives on its own when you press Play.
Not sure which pack? This one. Older PC, or want terrain to the horizon? The other two packs are under More options.
- 2Whitelist
Ask to join in the Discord
Indigo is whitelist-only. In the Discord, press Request access in the whitelist channel and enter your exact Minecraft Java username, spelled the way it shows in game.
Most requests are approved automatically within seconds. A few get a quick look from staff first. Either way the Indigo bot sends you a DM with the setup steps when you are in.
Know someone who already plays? They can vouch for you with /vouch and you are in straight away. While you wait, the rules are short.
- 3Connect
Press Play, join the server
Launch the Indigo instance and open Multiplayer. Indigo is already in the list: select it and press Join Server.
Not there? Add it with this address. No port needed.
Voice chat comes with the pack and connects on its own; press V in game to pick your microphone. Something not working? Troubleshooting is under More options.
play.indigomc.online
Everything else, if you need it
None of this is needed for a normal first join. Open a section when it applies to you.
The other two packsIndigo Far adds terrain to the horizon. Indigo Performance drops the shaders for older PCs.
Three packs, one server. They all carry the exact same mods the server runs, plus Indigo’s own small wallet mod; they differ only in what runs on your screen. Each button copies a link for Add Instance → Import, exactly like step 1.
Indigo
Most gaming PCs from the last six years.
- Shaders (Complementary)
- Faithful 32x textures
- Sodium, smooth frames
- No Distant Horizons
6144 MB of memory
Indigo Far
Mid-range graphics card or better, 16 GB of RAM.
- Everything in Indigo
- Distant Horizons, terrain to the horizon
6144 MB of memory
Indigo Performance
Older laptops, or no dedicated graphics card.
- Vanilla look, lightest to run
- No Shaders
- No Faithful textures
- No Distant Horizons
4096 MB of memory
Each link is a tiny Prism instance, about 4 MB, that fetches the pack itself on first launch and keeps it current after that. In Indigo and Indigo Far, K switches the shaders off and on. Switching packs later: import the other link as a new instance, press Play, then copy your settings across (how to, under Already have an Indigo instance?). Delete the old instance when you are happy.
Already have an Indigo instance?Installed from a .mrpack file before automatic updates existed? Bring it along once.
Two ways; the first is simpler.
Import fresh and copy your settings over
- Do step 1 above (or pick your pack under The other two packs): import the link as a new instance and press Play once.
- Close the game. In Prism, select your old instance and press Folder; open .minecraft inside it.
- Copy options.txt, config/, saves/, screenshots/, player_models/, XaeroWaypoints/ and xaero/ into the new instance’s .minecraft folder, replacing what is there. That is your video settings, keybinds, mod settings, worlds, screenshots, player model, Xaero maps and waypoints.
- Play from the new instance. When you are happy, delete the old one.
Or keep the instance and add the updater
Be on 0.5.2-birch-6 or newer first (older? do one last Update from file). Then right-click the instance → Edit → Settings → Custom commands, tick Custom commands, and paste the line for your pack into Pre-launch command:
"$INST_JAVA" -jar packwiz-installer-bootstrap.jar --bootstrap-no-update --bootstrap-main-jar packwiz-installer.jar https://www.indigomc.online/pack/indigo/pack.tomlEither way the updater checks https://www.indigomc.online/pack/ each launch and updates Indigo’s mods, the shipped resource and shader packs, and two settings files that must match the server (Better Days and Sable). It only ever removes files it installed. One limit: if a future version moves to a new Minecraft or NeoForge release, that one change is made in Prism by hand, and we will say so on the updates page.
Pack files and other launchersClassic .mrpack files for the Modrinth App, CurseForge or a manual import. These do not update themselves.
The same three packs as classic .mrpack files. When a new version is out, download the new file and use Update from file (Prism: right-click the instance → Edit → Modrinth → Update from file) on the instance you have, never a new instance, so your settings stay. The Modrinth App and the CurseForge app cannot run Indigo’s automatic updates, which is why Prism is the launcher we recommend.
Indigo
Most gaming PCs from the last six years.
- Shaders (Complementary)
- Faithful 32x textures
- Sodium, smooth frames
- No Distant Horizons
6144 MB of memory · 4.2 MB
Indigo Far
Mid-range graphics card or better, 16 GB of RAM.
- Everything in Indigo
- Distant Horizons, terrain to the horizon
6144 MB of memory · 4.2 MB
Indigo Performance
Older laptops, or no dedicated graphics card.
- Vanilla look, lightest to run
- No Shaders
- No Faithful textures
- No Distant Horizons
4096 MB of memory · 4.2 MB
In the Modrinth App: create a new instance from file and pick the downloaded .mrpack, or drag it onto the window. An in-place update there is not something we have verified; copy your files across as described above. Minecraft 1.21.1, NeoForge 21.1.248, Java 21. What changed in each version is on the updates page.
+ Verify a download
SHA-256 of Indigo-0.6.1.mrpack:
98fe59fb811b3c362fa0484fed143f7ebcc023abee10cab1482a895867060898
SHA-256 of Indigo-Far-0.6.1.mrpack:
b010527802db7a25ece318699b71937245c97c5d72b6e47235f9deefcbdc82f1
SHA-256 of Indigo-Performance-0.6.1.mrpack:
a0f2c6b8219af8a3ec6948aa598db77d7c2423d4ca83201eb8775bcdffb82f4d
Memory, shaders and texturesThe import already sets the right memory. Worth a look if the game stutters.
The place to change memory:
Right-click Indigo → Edit → Settings → Memory
- Indigo
- 6144 MB
- Indigo Far
- 6144 MB
- Indigo Performance
- 4096 MB
Giving Minecraft most of your computer’s RAM makes it stutter, not faster.
- Frames too low on Indigo? K toggles the shader off and on, and O opens its settings, where the Low profile costs much less. Still struggling? Switch to Indigo Performance.
- Good PC? Indigo and Indigo Far also carry Faithful 64x, off by default. In game: Options → Resource Packs, swap the 32x pack for the 64x one. Prefer vanilla textures? Turn the packs off there; the choice sticks.
- Indigo Far needs a while on first launch while Distant Horizons builds its far terrain. Test notes and frame rates for all three: shaders and performance on the wiki.
- The pack manages the Indigo instance’s server list, so an update resets it to just Indigo. Keep other servers in a different instance.
What you needA real Java account, a PC or Mac, and a launcher. The rest installs itself.
- Game
- Minecraft: Java Edition 1.21.1
- Java
- Java 21 (Prism installs it)
- Memory
- 6144 MB for Indigo and Indigo Far, 4096 MB for Indigo Performance
- Account
- A real Minecraft: Java Edition account. Bedrock, console and phones cannot join.
- Launcher
- Prism Launcher (recommended) or the Modrinth App
- Port
- None. Just the address.
TroubleshootingThe errors people hit, and what each one means.
“You are not whitelisted on this server”
You have not been added yet. Press Request access in the Discord whitelist channel with your exact Minecraft Java username, and watch for a DM from the Indigo bot.
Mod rejections, or a red screen listing mismatched mods
Your game no longer matches the server, usually because a new version is out. Quit to the launcher and press Play again: the updater window brings you up to date. Built your instance from a .mrpack file before? See “Already have an Indigo instance?” above, then do the same. Do not replace or add gameplay mods by hand.
“Incompatible FML modded server”
Wrong Minecraft version, wrong NeoForge version, or the wrong instance selected. Use the official import link: it sets up Minecraft 1.21.1 with NeoForge 21.1.248.
The updater window shows an error, or the game starts without mods
Check you are online, then press Play again. If it keeps failing, open Edit → Settings → Custom commands on the instance and make sure the pre-launch command is still there (see “Already have an Indigo instance?” for the exact line). Still stuck? Import the link again as a fresh instance.
The game crashes while joining
Before changing anything by hand, import the link again as a fresh instance and try that. Most joining crashes come from an instance that drifted.
Java errors, or the instance will not start
Prism normally finds or downloads Java 21 itself. If it asks, let it. If the instance complains about Java, point it at Java 21 under Edit Instance → Settings → Java. Older or newer Java versions will not run this pack.
Nobody can hear me in voice chat
Press V in game to open the voice chat settings and pick the right microphone. Voice connects to the same address as the game, so if you can play, voice should reach the server too.
Still stuck? Ask in the Discord help channel and include the exact message you see.
Questions people askFree? Bedrock? Friends? Updates?
Is it free?
Yes. You need a normal Minecraft: Java Edition account, and that is it. No ranks, no store.
Can I play on Bedrock, console, or a phone?
No. Indigo is a modded Java Edition server, so it needs the Java game on a PC or Mac.
I have never used mods. Is this hard?
No. You install Prism Launcher, paste one link into Add Instance → Import, and press Play; the first launch downloads everything and later updates arrive on their own. The three steps above are the whole thing.
Can I bring friends?
Yes. Once you have been on the whitelist for two weeks you can vouch for a friend yourself with /vouch in the Discord: give their exact Java username and their Discord account, and they are in immediately. Two vouches a month per player. Before that, they press Request access like you did.
Do I need a strong PC?
The recommended pack, Indigo, includes shaders and runs well on any gaming PC from the last six years or so, with 6144 MB of memory. Older laptop or no graphics card? Use Indigo Performance from the other packs section instead: same game, no shaders, 4096 MB. Do not add or swap gameplay mods, or the server will reject the join.
A new version is out. Do I start over?
No. If you installed from the link on this page, press Play and the new version arrives; nothing else to do. If you built your instance from a .mrpack file before that existed, “Already have an Indigo instance?” above shows how to bring it along once. Your settings, keybinds, maps and player model stay either way.
Where do I ask for help?
Open a post in the Discord help channel with the exact error text or a screenshot. It is a forum, so the whole community can answer, and staff watch it.
The house rules are the same ones pinned in the Discord.