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.

Choose the CurseForge chip in Modpacks and search for Amnesia. Several unrelated packs have similar names, so check the row for Amnesia by Kehaan before you press Install. The window names Forge and Minecraft 1.12.2, and the install log reports Pack installed at the end. For the backup, the version list and the EULA tick, see Install a CurseForge modpack.

First start

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 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. 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 crashes at boot. Find and read a crash report shows how to name the mod at fault.