Set up an Amnesia Minecraft server

Amnesia is a Minecraft 1.12.2 Forge modpack by Kehaan in which the whole world has amnesia. Its CurseForge page says recipes are randomised every 5 minutes, mob drops and block drops change, textures and terrain can come out broken, and players can find items that cure, pause, reset or check the timer. You install the server from the Modpacks tab, using the pack's own server files.

Checked against Amnesia 1.5.0 on Minecraft 1.12.2 (Forge 14.23.5.2860), October 2026.

What the pack needs

• Minecraft 1.12.2 with Forge 14.23.5.2860. The server files include forge-1.12.2-14.23.5.2860.jar, and the panel launches that jar. For Minecraft 1.12.2 the panel runs Java 8 on its own.
• Memory. The pack page gives no figure. The pack's own launch script uses -Xmx2G, and the server files hold 79 mod jars. Your plan sets the RAM, so see how much RAM a Minecraft server needs and the Minecraft plans.
• Disk space. The server zip is about 195 MB and unpacks to about 217 MB. The zip sits on your plan's disk while it unpacks, so keep room for both.
• The same pack version for players. This guide installs 1.5.0, the newest file on CurseForge, released on 7 September 2026. Its changelog reads "Updated Recurrent Complex" and "Fixed some bugs". Players need that version in the CurseForge app.

Install the server files

Installing a modpack reinstalls the server and replaces the current world, so use a new server or one you can wipe.

1. Open Backups under Essentials and press Create backup if the server holds anything you want to keep.
2. Open Modpacks under Content in the left rail.
3. Press the CurseForge source button, then search for Amnesia. Several unrelated packs have similar names, so check the row for Amnesia by Kehaan.
4. Press Install on that row. The popup says it reinstalls your server and names Forge and Minecraft 1.12.2.
5. Leave Take a backup first ticked. Tick Start the server when it's ready if you want the server to start itself, and tick I agree to the Minecraft EULA if the popup shows it.
6. Press and hold Hold to Install and reinstall until it fills, then watch the Console tab until the install log reports Pack installed.

First start

Press Start on the Console tab. The server files carry no eula.txt, so unless you accepted the EULA in the install popup or earlier on this server, the panel opens Accept the Minecraft EULA first. The server is up when the console prints a line containing For help, type.

The server files carry no server.properties either, so the install writes a short one and Minecraft fills in the rest on the first start. After that, Config Editor under Content can change it. Your address is in the left rail under Server address, and Connect to your server for the first time covers adding it in Minecraft. To give yourself commands, see Whitelist players and set operators.

What to expect in play

The randomising is the pack working, not a fault. Recipes, mob drops and block drops change on a timer, and the pack's config/amnesia.json holds two messages, [Amnesia] You have forgotten what you have once known and [Amnesia] You have regained your memory, and a setting called expire_ticks, which is 6000 in the shipped file. The pack page also lists custom advancements with a reward for completing all of them, a quest book, and a machine that crafts using the amnesia. Broken textures and odd terrain are listed there as normal.

Common problems

• A player cannot join. Check they run Amnesia 1.5.0 on Minecraft 1.12.2 with Forge.
• The server lags or runs out of memory. Watch the RAM card on the Console tab and the TPS reading in the left rail, lower View distance (chunks) in Config Editor under Performance, and move to a bigger plan if the RAM card stays full. Why is my server lagging has more.
• The install stops while unpacking. Your plan's disk may be too small. Check Disk Analyser, clear space and install again. Server out of disk space shows how.
• The server crashes at boot. Find and read a crash report shows how to name the mod at fault.