diff --git a/flake.nix b/flake.nix
index 475350a..a7d1c5d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,9 +73,13 @@
       "nixos-minecraft" = nixpkgs.lib.nixosSystem {
         inherit system;
         modules = [
-          ./nix-system-configs/modules/system/minecraft.nix
+          # Apply the overlay first so pkgs in later modules (like our local
+          # `minecraft.nix`) see the extra helpers provided by the overlay
+          { nixpkgs.overlays = [ inputs.nix-minecraft.overlay ]; }
+
           nix-minecraft.nixosModules.minecraft-servers
-          {nixpkgs.overlays = [inputs.nix-minecraft.overlay];}
+
+          ./nix-system-configs/modules/system/minecraft.nix
         ];
       };
     };
diff --git a/nix-system-configs/modules/system/minecraft.nix b/nix-system-configs/modules/system/minecraft.nix
index 5d1128b..16f7359 100644
--- a/nix-system-configs/modules/system/minecraft.nix
+++ b/nix-system-configs/modules/system/minecraft.nix
@@ -7,6 +7,10 @@
   choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
   # Domain and Cloudflare DDNS records configured here. Update this list to add/remove records.
   domain = "prg-radio.org";
+  # Try to use the nix-minecraft helper if the overlay is present; otherwise
+  # fall back to a local path. If you use the fallback, ensure the path is an
+  # unpacked modpack directory with `mods` and `config` subdirectories.
+  modpack = /srv/minecraft/modpacks/AllTheMods10-prg.mrpack;
 in {
   options.local = {
     hostname = lib.mkOption {
@@ -48,8 +52,8 @@ in {
 
     services.tailscale.enable = true;
 
-    networking.firewall.allowedTCPPorts = [25565 24454 8100 19132];
-    networking.firewall.allowedUDPPorts = [25565 24454 8100 19132];
+    networking.firewall.allowedTCPPorts = [25565 25566 24454 8100 19132];
+    networking.firewall.allowedUDPPorts = [25565 25566 24454 8100 19132];
 
     # 24454 - https://modrepo.de/minecraft/voicechat/wiki/server_setup_self_hosted !!!
     # This is the VoiceChat mod in Minecraft
@@ -66,6 +70,57 @@ in {
       eula = true;
       openFirewall = true;
 
+      servers.all-the-mods-ten = {
+        enable = true;
+        autoStart = true;
+        restart = "always";
+
+        package = pkgs.neoforgeServers.neoforge-1_21_1-21_1_220;
+
+        jvmOpts = lib.concatStringsSep " " [
+          "-Xms28G"
+          # Use 120GB of RA
+          "-Xmx32G"
+        ];
+
+        serverProperties = {
+          server-port = 25566;
+          motd = "The Sub Server All the Mods 10";
+          difficulty = "hard";
+          gamemode = "survival";
+          max-players = 64;
+          online-mode = true;
+          white-list = false;
+          spawn-protection = 0;
+          view-distance = 9;
+          simulation-distance = 3;
+          enforce-secure-profile = false;
+          enable-command-block = false;
+          enable-rcon = false;
+          require-resource-pack = false;
+          level-seed = "-2032795982907864146";
+        };
+
+        # Grant operator privileges to the user with the given UUID.
+        # Update `name` to the player's Minecraft username if you know it.
+        operators = {
+          username1 = {
+            uuid = "5e52c4ba-9b1a-469b-8f68-b9d684eae31d";
+            level = 4; # 4 = highest permission (operator)
+            bypassesPlayerLimit = true;
+          };
+        };
+
+        symlinks = {
+          "mods" = "${modpack}/overrides/mods";
+        };
+        files = {
+          "config" = "${modpack}/overrides/config";
+          "kubejs" = "${modpack}/overrides/kubejs";
+          "datapacks" = "${modpack}/overrides/datapacks";
+        };
+      };
+
       servers.fabric-modded = {
         enable = true;
         autoStart = true;
@@ -106,7 +161,7 @@ in {
           white-list = false;
           spawn-protection = 0;
           view-distance = 9;
-          simulation-distance = 4;
+          simulation-distance = 3;
           enforce-secure-profile = false;
           enable-command-block = false;
           enable-rcon = false;
@@ -286,7 +341,6 @@ in {
                 sha512 = "a9f673fac1f6f554b7394168cbe726f1a15eb2bbef1b65b3c9979853af8de70bf13a457c88ebdc30b955a071d519e86c631cdbf1dd39cdab7c73b9c2d7f165e1";
               };
 
-
               AddCollective = pkgs.fetchurl {
                 url = "https://cdn.modrinth.com/data/e0M1UDsY/versions/T8rv7kwo/collective-1.21.11-8.13.jar";
                 sha512 = "af145a48ac89346c7b1ffa8c44400a91a9908e4d1df0f6f1a603ff045b1fd82d9aa041aea27a682c196b266c0daf84cb5b7b8d83b07ee53e2bc1a5c210d19a1b";
diff --git a/nix-system-configs/modules/system/traefik.nix b/nix-system-configs/modules/system/traefik.nix
index 39de6dc..9c7b9f4 100644
--- a/nix-system-configs/modules/system/traefik.nix
+++ b/nix-system-configs/modules/system/traefik.nix
@@ -305,6 +305,9 @@ in {
           minecraft = {
             address = "[::]:25565";
           };
+          minecraft_modded = {
+            address = "[::]:25566";
+          };
 
           # Minecraft Bedrock (default port 19132) - expose both TCP and UDP
           minecraft-bedrock-tcp = {address = "[::]:19132";};
@@ -663,6 +666,11 @@ in {
               {address = "10.1.1.244:25565";}
             ];
           };
+          minecraft_modded.loadBalancer = {
+            servers = [
+              {address = "10.1.1.244:25566";}
+            ];
+          };
 
           # TCP service for Minecraft Bedrock
           minecraft-bedrock-tcp.loadBalancer = {
@@ -1041,8 +1049,8 @@ in {
     };
 
     # Allow common HTTP/S and control ports,
-    networking.firewall.allowedTCPPorts = [80 443 10022 30033 8448 9001 3001 993 465 25 25565 24454 2456 2457 2458 26000 1234 3979 2022 19132];
-    networking.firewall.allowedUDPPorts = [80 443 9987 9001 3001 993 465 25 25565 24454 2022 2456 2457 2458 26000 1234 3979 2022 19132];
+    networking.firewall.allowedTCPPorts = [80 443 10022 30033 8448 9001 3001 993 465 25 25565 25566 24454 2456 2457 2458 26000 1234 3979 2022 19132];
+    networking.firewall.allowedUDPPorts = [80 443 9987 9001 3001 993 465 25 25565 25566 24454 2022 2456 2457 2458 26000 1234 3979 2022 19132];
 
     system.stateVersion = "25.11";
   };