diff --git a/libretro-build.sh b/libretro-build.sh
index c73d582a..f5e2530e 100755
--- a/libretro-build.sh
+++ b/libretro-build.sh
@@ -177,9 +177,9 @@ else
 	libretro_build_core gpsp
 	build_libretro_emux
 	libretro_build_core fuse
-
 	libretro_build_core stonesoup
 	libretro_build_core nxengine
+	libretro_build_core gw
 
 	build_libretro_test
 fi
diff --git a/rules.d/core-rules.sh b/rules.d/core-rules.sh
index 407a56bc..5f56d1d7 100644
--- a/rules.d/core-rules.sh
+++ b/rules.d/core-rules.sh
@@ -261,6 +261,10 @@ libretro_fuse_git_url="https://github.com/libretro/fuse-libretro.git"
 libretro_fuse_build_makefile="Makefile.libretro"
 libretro_fuse_build_platform="$FORMAT_COMPILER_TARGET_ALT"
 
+libretro_gw_name="Game & Watch"
+libretro_gw_git_url="https://github.com/libretro/gw-libretro.git"
+libretro_gw_git_submodules="yes"
+libretro_gw_build_makefile="Makefile.libretro"
 
 # CORE RULE VARIABLES
 #