diff --git a/pkgs/games/default.nix b/pkgs/games/default.nix
index 71ccdf5e..5de788ff 100644
--- a/pkgs/games/default.nix
+++ b/pkgs/games/default.nix
@@ -44,7 +44,7 @@ let
   packages = (pkgs.lib.evalModules {
     modules = [
       (if config == null then configFile else config)
-      baseModule ./humblebundle ./steam ./itch ./gog
+      baseModule ./humblebundle ./steam ./itch ./gog ./foss
     ];
   }).config.packages;
 
diff --git a/pkgs/games/foss/default.nix b/pkgs/games/foss/default.nix
new file mode 100644
index 00000000..a1f1a265
--- /dev/null
+++ b/pkgs/games/foss/default.nix
@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.foss;
+
+  self = rec {
+    callPackage = pkgs.lib.callPackageWith (pkgs // self);
+    callPackage_i686 = pkgs.lib.callPackageWith (pkgs.pkgsi686Linux // self);
+
+    ultrastar-play = callPackage ./ultrastar-play.nix {};
+  };
+in {
+  options.foss = {
+  };
+
+  config.packages = {
+    foss = self;
+  };
+}
diff --git a/pkgs/games/foss/ultrastar-play.nix b/pkgs/games/foss/ultrastar-play.nix
new file mode 100644
index 00000000..6b5f2083
--- /dev/null
+++ b/pkgs/games/foss/ultrastar-play.nix
@@ -0,0 +1,101 @@
+
+{ lib, stdenv, fetchurl
+, buildUnity
+, autoreconfHook
+, unzip
+, buildFHSEnv
+, writeScript
+, fetchFromGitHub
+, autoPatchelfHook
+, fetchpatch
+, pkg-config
+, lua
+, fpc
+, pcre
+, portaudio
+, freetype
+, libpng
+, SDL2
+, SDL2_image
+, SDL2_gfx
+, SDL2_mixer
+, SDL2_net, SDL2_ttf
+, ffmpeg_4
+, sqlite
+, zlib
+, libGLU
+, libGL
+, xorg
+}:
+
+let
+  sharedLibs = [
+    pcre portaudio freetype
+    # SDL2 SDL2_image SDL2_gfx SDL2_mixer SDL2_net SDL2_ttf
+    sqlite lua zlib xorg.libX11 libGLU libGL ffmpeg_4
+  ];
+
+  unpacked = buildUnity {
+    name = "ultrastar-play";
+    version = "0.9.0";
+    fullName = "UltraStar Play";
+
+    # src = fetchFromGitHub {
+    #   owner = "UltraStar-Deluxe";
+    #   repo = "Play";
+    #   rev = "v${version}";
+    #   hash = "sha256-KvYf4dpgN72F8Y5iFNba0SCjPoS33O3FAdrrC49xoGo=";
+    # };
+    src = fetchurl {
+      url = "https://github.com/UltraStar-Deluxe/Play/releases/download/v0.9.0/UltraStarPlay-v0.9.0-Linux64.zip";
+      sha256 = "sha256-kC4jb2KSOyDrAweHzlyWO1tB7D0/wGPXXP+SXF1Rz6k=";
+    };
+
+    # phases = [ "installPhase" "fixupPhase" ];
+
+    nativeBuildInputs = [ pkg-config unzip autoPatchelfHook ];
+    buildInputs = [ libpng ] ++ sharedLibs;
+
+    # postPatch = ''
+    # '';
+
+    preInstall = ''
+      mv 'UltraStar Play' 'UltraStar Play.x86_64'
+
+      mkdir -p $out/share/lib
+      cp -a UnityPlayer.so $out/share/lib
+    '';
+
+  };
+
+in unpacked
+# in buildFHSEnv {
+#   # inherit (unpacked) pname version;
+
+#   name = "ultrastar-play";
+
+#   runScript = writeScript "run-ultrastar-play" ''
+#     set -iuo pipefail
+#     tmp=$(mktemp -d ultrastar-play-XXXXX)
+
+#     clean_up() {
+#         rm -rf "$tmp"
+#     }
+#     trap clean_up EXIT SIGINT SIGTERM
+
+#     cd "$tmp"
+#     cp -a --reflink=auto ${unpacked}/ "$tmp"
+
+#     chmod --recursive +w "$tmp"
+
+#     "$tmp/UltraStar Play";
+#   '';
+
+
+#   meta = with lib; {
+#     homepage = "https://ultrastar-play.com";
+#     description = "Free and open source singing game with song editor for desktop, mobile, and smart TV ";
+#     license = licenses.mit;
+#     maintainers = with maintainers; [ Profpatsch ];
+#   };
+# }