diff --git a/home-manager.nix b/home-manager.nix
index b741a7d..7550883 100644
--- a/home-manager.nix
+++ b/home-manager.nix
@@ -18,6 +18,7 @@
     ./programs/spotify
     ./programs/tmux
     ./programs/waybar.nix
+    ./services/openttd.nix
     myneovim.homeManagerModules.default
   ];
 
@@ -110,6 +111,7 @@
     winetricks
 
     # Games
+    openttd
     prismlauncher
     shattered-pixel-dungeon
     xonotic
diff --git a/nixos.nix b/nixos.nix
index 975db1d..9a435dd 100644
--- a/nixos.nix
+++ b/nixos.nix
@@ -127,6 +127,7 @@ in
       443 # SSL
       6567 # Mindustry
       80 # HTTP
+      3979 # OpenTTD
     ];
 
     allowedUDPPorts = [
@@ -135,6 +136,7 @@ in
       28910 # Heretic II
       6567 # Mindustry
       8211 # Palworld
+      3979 # OpenTTD
     ];
 
     allowedTCPPortRanges = [
diff --git a/services/openttd.nix b/services/openttd.nix
new file mode 100644
index 0000000..11ed391
--- /dev/null
+++ b/services/openttd.nix
@@ -0,0 +1,23 @@
+{
+  pkgs,
+  ...
+}:
+
+{
+  home.packages = with pkgs; [
+    openttd
+  ];
+
+  systemd.user.services.openttd = {
+    Install.WantedBy = [ "default.target" ];
+
+    Unit.Description = "OpenTTD Tmux server";
+
+    Service = {
+      ExecStart = "${pkgs.tmux}/bin/tmux new -s OpenTTD -d '${pkgs.openttd}/bin/openttd -D'";
+      ExecStop = "${pkgs.tmux}/bin/tmux kill-server";
+      Restart = "on-failure";
+      Type = "forking";
+    };
+  };
+}