diff --git a/flake.lock b/flake.lock
index 4734661..b7c4492 100644
--- a/flake.lock
+++ b/flake.lock
@@ -623,11 +623,11 @@
     },
     "nixpkgs-mine": {
       "locked": {
-        "lastModified": 1717245190,
-        "narHash": "sha256-UFuJkXgNQ2JbD6P9EJCzelUQ73wzxzGrybfkO3o/LGU=",
+        "lastModified": 1717628902,
+        "narHash": "sha256-qMAW+oKis3F8jXTjX9Ng02/LzZd+7YOK05Qa33h9yqY=",
         "owner": "devplayer0",
         "repo": "nixpkgs",
-        "rev": "9b78c3a4c5800e1998d330d06d662598b21ac0d1",
+        "rev": "3e0ee08114e1563b1a0fd6a907563b5e86258fb4",
         "type": "github"
       },
       "original": {
diff --git a/pkgs/chocolate-doom2xx.nix b/pkgs/chocolate-doom2xx.nix
new file mode 100644
index 0000000..1d13224
--- /dev/null
+++ b/pkgs/chocolate-doom2xx.nix
@@ -0,0 +1,48 @@
+{ lib, stdenv, autoreconfHook, pkg-config, SDL, SDL_mixer, SDL_net
+, fetchFromGitHub, fetchpatch, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "chocolate-doom";
+  version = "2.3.0";
+
+  src = fetchFromGitHub {
+    owner = "chocolate-doom";
+    repo = pname;
+    rev = "${pname}-${version}";
+    sha256 = "sha256-1uw/1CYKBvDNgT5XxRBY24Evt3f4Y6YQ6bScU+KNHgM=";
+  };
+
+  patches = [
+    # Pull upstream patch to fix build against gcc-10:
+    #   https://github.com/chocolate-doom/chocolate-doom/pull/1257
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://github.com/chocolate-doom/chocolate-doom/commit/a8fd4b1f563d24d4296c3e8225c8404e2724d4c2.patch";
+      sha256 = "1dmbygn952sy5n8qqp0asg11pmygwgygl17lrj7i0fxa0nrhixhj";
+    })
+  ];
+
+  outputs = [ "out" "man" ];
+
+  postPatch = ''
+    patchShebangs --build man/{simplecpp,docgen}
+  '';
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    # for documentation
+    python3
+  ];
+  buildInputs = [ SDL SDL_mixer SDL_net ];
+  enableParallelBuilding = true;
+
+  meta = {
+    homepage = "http://chocolate-doom.org/";
+    description = "A Doom source port that accurately reproduces the experience of Doom as it was played in the 1990s";
+    license = lib.licenses.gpl2Plus;
+    platforms = lib.platforms.unix;
+    hydraPlatforms = lib.platforms.linux; # darwin times out
+    maintainers = with lib.maintainers; [ ];
+  };
+}
diff --git a/pkgs/default.nix b/pkgs/default.nix
index b75672a..73e310c 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -9,4 +9,5 @@ in
   librespeed-go = callPackage ./librespeed-go.nix { };
   modrinth-app = callPackage ./modrinth-app { };
   glfw-minecraft = callPackage ./glfw-minecraft { };
+  chocolate-doom2xx = callPackage ./chocolate-doom2xx.nix { };
 }