diff --git a/pkgs/misc/emulators/gens-gs/default.nix b/pkgs/misc/emulators/gens-gs/default.nix
new file mode 100644
index 00000000000..4bc727c241e
--- /dev/null
+++ b/pkgs/misc/emulators/gens-gs/default.nix
@@ -0,0 +1,19 @@
+{ stdenv, fetchurl, pkgconfig, gtkLibs, SDL, nasm, zlib, libpng, mesa }:
+
+stdenv.mkDerivation { 
+  name = "gens-gs-7";
+
+  src = fetchurl {
+    url = http://segaretro.org/images/6/6d/Gens-gs-r7.tar.gz;
+    sha256 = "1ha5s6d3y7s9aq9f4zmn9p88109c3mrj36z2w68jhiw5xrxws833";
+  };
+
+  buildInputs = [ pkgconfig gtkLibs.gtk SDL nasm zlib libpng mesa ];
+
+  meta = {
+    homepage = http://segaretro.org/Gens/GS;
+    description = "A Genesis/Mega Drive emulator";
+    platforms = stdenv.lib.platforms.linux;
+    maintainers = [ stdenv.lib.maintainers.eelco ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d2b94837e77..ce6a0e76663 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6826,6 +6826,8 @@ let
     inherit (gtkLibs1x) gtk;
   };
 
+  gensgs = callPackage ../misc/emulators/gens-gs { };
+
   ghostscript = callPackage ../misc/ghostscript {
     x11Support = false;
     cupsSupport = getPkgConfig "ghostscript" "cups" true;