diff --git a/pkgs/games/gcs/default.nix b/pkgs/games/gcs/default.nix
new file mode 100644
index 000000000000..1d96d056a822
--- /dev/null
+++ b/pkgs/games/gcs/default.nix
@@ -0,0 +1,77 @@
+{ stdenv, fetchFromGitHub, runCommand
+, jdk8, ant
+, jre8, makeWrapper
+, findutils
+}:
+
+let
+  gcs = fetchFromGitHub {
+    owner = "richardwilkes";
+    repo = "gcs";
+    rev = "gcs-4.8.0";
+    sha256 = "0k8am8vfwls5s2z4zj1p1aqy8gapn5vbr9zy66s5g048ch8ah1hm";
+  };
+  appleStubs = fetchFromGitHub {
+    owner = "richardwilkes";
+    repo = "apple_stubs";
+    rev = "gcs-4.3.0";
+    sha256 = "0m1qw30b19s04hj7nch1mbvv5s698g5dr1d1r7r07ykvk1yh7zsa";
+  };
+  toolkit = fetchFromGitHub {
+    owner = "richardwilkes";
+    repo = "toolkit";
+    rev = "gcs-4.8.0";
+    sha256 = "1ciwwh0wxk3pzsj6rbggsbg3l2f741qy7yx1ca4v7vflsma84f1n";
+  };
+  library = fetchFromGitHub {
+    owner = "richardwilkes";
+    repo = "gcs_library";
+    rev = "gcs-4.8.0";
+    sha256 = "085jpp9mpv5kw00zds9sywmfq31mrlbrgahnwcjkx0z9i22amz4g";
+  };
+in stdenv.mkDerivation rec {
+  name = "gcs-${version}";
+  version = "4.8.0";
+
+  src = runCommand "${name}-src" { preferLocalBuild = true; } ''
+    mkdir -p $out
+    cd $out
+
+    cp -r ${gcs} gcs
+    cp -r ${appleStubs} apple_stubs
+    cp -r ${toolkit} toolkit
+    cp -r ${library} gcs_library
+  '';
+
+  buildInputs = [ jdk8 jre8 ant makeWrapper ];
+  buildPhase = ''
+    cd apple_stubs
+    ant
+
+    cd ../toolkit
+    ant
+  
+    cd ../gcs
+    ant
+
+    cd ..
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin $out/share/java
+
+    find gcs/libraries toolkit/libraries apple_stubs/ \( -name '*.jar' -and -not -name '*-src.jar' \) -exec cp '{}' $out/share/java ';'
+    
+    makeWrapper ${jre8}/bin/java $out/bin/gcs \
+      --set GCS_LIBRARY ${library} \
+      --add-flags "-cp $out/share/java/gcs-${version}.jar com.trollworks.gcs.app.GCS"
+  '';  
+
+  meta = with stdenv.lib; {
+    description = "A stand-alone, interactive, character sheet editor for the GURPS 4th Edition roleplaying game system";
+    homepage = "http://gurpscharactersheet.com/";
+    license = licenses.mpl20;
+    platforms = platforms.all;
+    maintainers = with maintainers; [];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1264013db36c..9f870bc76eaa 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16062,6 +16062,8 @@ with pkgs;
 
   gav = callPackage ../games/gav { };
 
+  gcs = callPackage ../games/gcs { };
+
   gemrb = callPackage ../games/gemrb { };
 
   ghostOne = callPackage ../servers/games/ghost-one { };