diff --git a/packages/atlauncher/ATLauncher.jar b/packages/atlauncher/ATLauncher.jar
new file mode 100644
index 0000000..9dbf318
Binary files /dev/null and b/packages/atlauncher/ATLauncher.jar differ
diff --git a/packages/atlauncher/default.nix b/packages/atlauncher/default.nix
new file mode 100644
index 0000000..9919235
--- /dev/null
+++ b/packages/atlauncher/default.nix
@@ -0,0 +1,25 @@
+{ stdenv, xorg, jdk, mesa, openal, ... }:
+
+stdenv.mkDerivation {
+  name = "atlauncher";
+  src = ./ATLauncher.jar;
+  buildInputs = with xorg; [ libX11 libXext libXcursor libXrandr libXxf86vm jdk mesa openal ];
+  buildCommand = ''
+    mkdir -pv $out/libexec/ $out/bin/
+    cp -v $src $out/libexec/ATLauncher.jar
+
+    RESULT=
+    for x in $nativeBuildInputs; do
+      RESULT=$x/lib/:$RESULT
+    done
+
+    cat <<EOF > $out/bin/atlauncher
+    #!${stdenv.shell}
+    export LD_LIBRARY_PATH=$RESULT
+    export GAME_LIBRARY_PATH=$RESULT
+    exec ${jdk}/bin/java -jar $out/libexec/ATLauncher.jar --working-dir=/home/sven/.atlauncher
+    EOF
+
+    chmod +x $out/bin/atlauncher
+  '';
+}
diff --git a/packages/multimc-dev/default.nix b/packages/multimc-dev/default.nix
new file mode 100644
index 0000000..98009b4
--- /dev/null
+++ b/packages/multimc-dev/default.nix
@@ -0,0 +1,67 @@
+{ stdenv, fetchFromGitHub, cmake, jdk, zlib, file, makeWrapper, xorg, libpulseaudio, qt5, quazip, ... }:
+
+let
+  libnbt = fetchFromGitHub {
+    owner = "MultiMC";
+    repo = "libnbtplusplus";
+    rev = "4b305bb";
+    sha256 = "1zj7pxk0g5zl16hrngb4rss00hi019rylin7zgf18kaymc54nbcs";
+  };
+  quazip_ = fetchFromGitHub {
+    owner = "MultiMC";
+    repo = "quazip";
+    rev = "164acc35fd5f77d353161dcf1c4e121bc2ce756f";
+    sha256 = "0fjcasb3ay3nwg6ss7whm3pigf3asz2c4fhmfb0ldfgd5f2xx93z";
+  };
+in
+stdenv.mkDerivation {
+  name = "multimc-dev";
+  src = fetchFromGitHub {
+    owner = "MultiMC";
+    repo = "MultiMC5";
+    rev = "b61407a75d06abd61ce89f972581fa36a961d906";
+    sha256 = "1gqvzwm3j0dw5zxib7chazvc0vdwpvx7rxwxw2b88v0p6i03assa";
+  };
+  buildInputs = [ cmake qt5.qtbase jdk zlib file makeWrapper ];
+
+  libpath = with xorg; [ libX11 libXext libXcursor libXrandr libXxf86vm libpulseaudio ];
+  postUnpack = ''
+    rmdir $sourceRoot/libraries/libnbtplusplus
+    cp -r ${libnbt} $sourceRoot/libraries/libnbtplusplus
+    chmod 755 -R $sourceRoot/libraries/libnbtplusplus
+
+    rmdir $sourceRoot/libraries/quazip
+    cp -r ${quazip_} $sourceRoot/libraries/quazip
+    chmod 755 -R $sourceRoot/libraries/quazip
+
+    mkdir -pv $sourceRoot/build/
+    cp -v ${quazip.src} $sourceRoot/build/quazip-0.7.1.tar.gz
+  '';
+
+  enableParallelBuilding = true;
+
+  # the install rule tries to bundle ALL deps into the output for portability
+  installPhase = ''
+    RESULT=/run/opengl-driver/lib/
+    for x in $libpath; do
+      RESULT=$x/lib/:$RESULT
+    done
+
+    mkdir -pv $out/bin/jars $out/lib
+    cp -v MultiMC $out/bin/
+    cp -v jars/*.jar $out/bin/jars/ #*/
+    cp -v libMultiMC_*.so $out/lib
+    wrapProgram $out/bin/MultiMC --add-flags "-d \$HOME/.multimc/" --set GAME_LIBRARY_PATH $RESULT --prefix PATH : ${jdk}/bin/
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = https://multimc.org/;
+    description = "A free, open source launcher for Minecraft";
+    longDescription = ''
+      Allows you to have multiple, separate instances of Minecraft (each with their own mods, texture packs, saves, etc) and helps you manage them and their associated options with a simple interface.
+    '';
+    platforms = platforms.linux;
+    license = licenses.lgpl21Plus;
+    maintainers = [ maintainers.cleverca22 ];
+  };
+}
diff --git a/packages/technic-launcher/TechnicLauncher.jar b/packages/technic-launcher/TechnicLauncher.jar
index 4ce6976..1053541 100644
Binary files a/packages/technic-launcher/TechnicLauncher.jar and b/packages/technic-launcher/TechnicLauncher.jar differ
diff --git a/packages/technic-launcher/TechnicLauncher.jar.bak b/packages/technic-launcher/TechnicLauncher.jar.bak
new file mode 100644
index 0000000..4ce6976
Binary files /dev/null and b/packages/technic-launcher/TechnicLauncher.jar.bak differ
diff --git a/packages/technic-launcher/default.nix b/packages/technic-launcher/default.nix
index e137a88..77ca10f 100644
--- a/packages/technic-launcher/default.nix
+++ b/packages/technic-launcher/default.nix
@@ -1,22 +1,22 @@
-{ stdenv, xorg, jdk, mesa, openal, ... }:
+{ stdenv, xorg, jdk, mesa, openal, libpulseaudio, ... }:
 
 stdenv.mkDerivation {
   name = "technic";
   src = ./TechnicLauncher.jar;
-  buildInputs = with xorg; [ libX11 libXext libXcursor libXrandr libXxf86vm jdk mesa openal ];
+  buildInputs = with xorg; [ libX11 libXext libXcursor libXrandr libXxf86vm jdk mesa openal libpulseaudio ];
   buildCommand = ''
     mkdir -pv $out/libexec/ $out/bin/
     cp -v $src $out/libexec/TechnicLauncher.jar
 
     RESULT=
-    for x in $nativeBuildInputs; do
+    for x in $buildInputs; do
       RESULT=$x/lib/:$RESULT
     done
 
     cat <<EOF > $out/bin/technic
     #!${stdenv.shell}
-    export LD_LIBRARY_PATH=$RESULT
-    export GAME_LIBRARY_PATH=$RESULT
+    export LD_LIBRARY_PATH=/run/opengl-driver/lib:$RESULT
+    export GAME_LIBRARY_PATH=/run/opengl-driver/lib:$RESULT
     exec ${jdk}/bin/java -jar $out/libexec/TechnicLauncher.jar
     EOF