diff --git a/pkgs/games/alephone/apotheosis-x/default.nix b/pkgs/games/alephone/apotheosis-x/default.nix
new file mode 100644
index 000000000000..16bed9fad97e
--- /dev/null
+++ b/pkgs/games/alephone/apotheosis-x/default.nix
@@ -0,0 +1,20 @@
+{ alephone, requireFile }:
+
+alephone.makeWrapper rec {
+  pname = "apotheosis-x";
+  version = "1.1";
+  desktopName = "Marathon-Apotheosis-X";
+
+  zip = requireFile {
+    name = "Apotheosis_X_1.1.zip";
+    url = "https://www.moddb.com/mods/apotheosis-x/downloads";
+    sha256 = "sha256-4Y/RQQeN4VTpig8ZyxUpVHwzN8W8ciTBCkSzND8SMbs=";
+  };
+
+  sourceRoot = "Apotheosis X 1.1";
+
+  meta = {
+    description = "Total conversion for Marathon Infinity running on the Aleph One engine";
+    homepage = "https://simplici7y.com/items/apotheosis-x-5";
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a858dbd0bbc3..808b9f94e17a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -36264,6 +36264,7 @@ with pkgs;
   airstrike = callPackage ../games/airstrike { };
 
   alephone = callPackage ../games/alephone { };
+  alephone-apotheosis-x = callPackage ../games/alephone/apotheosis-x { };
   alephone-durandal = callPackage ../games/alephone/durandal { };
   alephone-eternal = callPackage ../games/alephone/eternal { };
   alephone-evil = callPackage ../games/alephone/evil { };