diff --git a/build.sh b/build.sh
index 492c033686..b41df631fa 100755
--- a/build.sh
+++ b/build.sh
@@ -10,18 +10,21 @@ set -e
 #   ./build.sh breakout --fast       # Standalone executable (optimized)
 #   ./build.sh breakout --web        # Emscripten web build
 #   ./build.sh breakout --profile    # Kernel profiling binary
+#   ./build.sh breakout --headless   # Use raylib 6.0 PLATFORM_MEMORY software renderer
 #   ./build.sh all                   # Build all envs with default and --float
 
 if [ -z "$1" ]; then
-    echo "Usage: ./build.sh ENV_NAME [--float] [--debug] [--local|--fast|--web|--profile|--cpu|--all]"
+    echo "Usage: ./build.sh ENV_NAME [--float] [--headless] [--debug] [--local|--fast|--web|--profile|--cpu|--all]"
     exit 1
 fi
 ENV=$1
 shift
 
+HEADLESS=0
 for arg in "$@"; do
     case $arg in
         --float) PRECISION="-DPRECISION_FLOAT" ;;
+        --headless) HEADLESS=1 ;;
         --debug) DEBUG=1 ;;
         --local) MODE=local ;;
         --fast)  MODE=fast ;;
@@ -50,22 +53,60 @@ if [ "$ENV" = "all" ]; then
     exit 0
 fi
 
+RAYLIB_VERSION="6.0"
+RAYLIB_RELEASE_PATH="6.0"
+
+has_lib() {
+    printf 'int main(void) { return 0; }\n' | ${CC:-cc} -x c - -o /tmp/pufferlib_libcheck "$1" >/dev/null 2>&1
+}
+
+append_if_lib_exists() {
+    local lib=$1
+    if has_lib "$lib"; then
+        RAYLIB_DESKTOP_LINUX_LIBS+=("$lib")
+    fi
+}
+
 # Linux/mac
 PLATFORM="$(uname -s)"
 if [ "$PLATFORM" = "Linux" ]; then
-    RAYLIB_NAME='raylib-5.5_linux_amd64'
+    RAYLIB_NAME="raylib-${RAYLIB_VERSION}_linux_amd64"
     OMP_LIB=-lomp5
     SANITIZE_FLAGS=(-fsanitize=address,undefined,bounds,pointer-overflow,leak -fno-omit-frame-pointer)
-    STANDALONE_LDFLAGS=(-lGL)
-    SHARED_LDFLAGS=(-Bsymbolic-functions)
+    RAYLIB_DESKTOP_LINUX_LIBS=(-ldl)
+    append_if_lib_exists -lGL
+    append_if_lib_exists -lX11
+    append_if_lib_exists -lXrandr
+    append_if_lib_exists -lXinerama
+    append_if_lib_exists -lXi
+    append_if_lib_exists -lXcursor
+    STANDALONE_LDFLAGS=("${RAYLIB_DESKTOP_LINUX_LIBS[@]}")
+    SHARED_LDFLAGS=(-Bsymbolic-functions "${RAYLIB_DESKTOP_LINUX_LIBS[@]}")
 else
-    RAYLIB_NAME='raylib-5.5_macos'
+    RAYLIB_NAME="raylib-${RAYLIB_VERSION}_macos"
     OMP_LIB=-lomp
     SANITIZE_FLAGS=()
     STANDALONE_LDFLAGS=(-framework Cocoa -framework IOKit -framework CoreVideo -framework OpenGL)
     SHARED_LDFLAGS=(-framework Cocoa -framework OpenGL -framework IOKit -undefined dynamic_lookup)
 fi
 
+RAYLIB_PLATFORM="-DPLATFORM_DESKTOP"
+RAYLIB_LINK_LDFLAGS=("${STANDALONE_LDFLAGS[@]}")
+if [ "$HEADLESS" = "1" ]; then
+    if [ "$MODE" = "web" ]; then
+        echo "Error: --headless is not compatible with --web"
+        exit 1
+    fi
+    RAYLIB_NAME="raylib-${RAYLIB_VERSION}_memory"
+    RAYLIB_PLATFORM="-DPLATFORM_MEMORY"
+    RAYLIB_LINK_LDFLAGS=()
+    if [ "$PLATFORM" = "Linux" ]; then
+        SHARED_LDFLAGS=(-Bsymbolic-functions)
+    else
+        SHARED_LDFLAGS=(-undefined dynamic_lookup)
+    fi
+fi
+
 CLANG_WARN=(
     -Wall
     -ferror-limit=3
@@ -81,21 +122,56 @@ download() {
     [ -d "$name" ] && return
     echo "Downloading $name..."
     case "$url" in
-        *.zip) curl -sL "$url" -o "$name.zip" && unzip -q "$name.zip" && rm "$name.zip" ;;
-        *)     curl -sL "$url" -o "$name.tar.gz" && tar xf "$name.tar.gz" && rm "$name.tar.gz" ;;
+        *.zip) curl -fsL "$url" -o "$name.zip" && unzip -q "$name.zip" && rm "$name.zip" ;;
+        *)     curl -fsL "$url" -o "$name.tar.gz" && tar xf "$name.tar.gz" && rm "$name.tar.gz" ;;
     esac
 }
 
-RAYLIB_URL="https://github.com/raysan5/raylib/releases/download/5.5"
-if [ "$MODE" = "web" ]; then
-    RAYLIB_NAME='raylib-5.5_webassembly'
-    download "$RAYLIB_NAME" "$RAYLIB_URL/$RAYLIB_NAME.zip"
+build_raylib_from_source() {
+    local name=$1 platform=$2
+    if [ ! -d "$name" ]; then
+        echo "Downloading raylib ${RAYLIB_VERSION} source for $platform..."
+        curl -fsL "$RAYLIB_SOURCE_URL" -o "$name.tar.gz"
+        tar xf "$name.tar.gz"
+        rm "$name.tar.gz"
+        mv "raylib-${RAYLIB_RELEASE_PATH}" "$name"
+    fi
+    if [ ! -f "$name/src/libraylib.a" ] || [ ! -f "$name/src/.pufferlib_pic" ]; then
+        echo "Building raylib ${RAYLIB_VERSION} $platform..."
+        make -C "$name/src" clean >/dev/null 2>&1 || true
+        make -C "$name/src" PLATFORM="$platform" RAYLIB_BUILD_MODE=RELEASE CUSTOM_CFLAGS=-fPIC
+        touch "$name/src/.pufferlib_pic"
+    fi
+}
+
+RAYLIB_URL="https://github.com/raysan5/raylib/releases/download/${RAYLIB_RELEASE_PATH}"
+RAYLIB_SOURCE_URL="https://github.com/raysan5/raylib/archive/refs/tags/${RAYLIB_RELEASE_PATH}.tar.gz"
+if [ "$HEADLESS" = "1" ]; then
+    build_raylib_from_source "$RAYLIB_NAME" PLATFORM_MEMORY
+    RAYLIB_A="$RAYLIB_NAME/src/libraylib.a"
+    INCLUDES=(-I./$RAYLIB_NAME/src -I./$RAYLIB_NAME/src/external -I./src -I./vendor)
+elif [ "$MODE" = "web" ]; then
+    RAYLIB_NAME="raylib-${RAYLIB_VERSION}_webassembly"
+    if download "$RAYLIB_NAME" "$RAYLIB_URL/$RAYLIB_NAME.zip"; then
+        RAYLIB_A="$RAYLIB_NAME/lib/libraylib.a"
+        INCLUDES=(-I./$RAYLIB_NAME/include -I./src -I./vendor)
+    else
+        echo "Error: prebuilt web raylib ${RAYLIB_VERSION} archive not found"
+        exit 1
+    fi
 else
-    download "$RAYLIB_NAME" "$RAYLIB_URL/$RAYLIB_NAME.tar.gz"
+    if download "$RAYLIB_NAME" "$RAYLIB_URL/$RAYLIB_NAME.tar.gz"; then
+        RAYLIB_A="$RAYLIB_NAME/lib/libraylib.a"
+        INCLUDES=(-I./$RAYLIB_NAME/include -I./src -I./vendor)
+    else
+        echo "Prebuilt raylib ${RAYLIB_VERSION} archive not found; building from source..."
+        RAYLIB_NAME="raylib-${RAYLIB_VERSION}_desktop_source"
+        build_raylib_from_source "$RAYLIB_NAME" PLATFORM_DESKTOP
+        RAYLIB_A="$RAYLIB_NAME/src/libraylib.a"
+        INCLUDES=(-I./$RAYLIB_NAME/src -I./$RAYLIB_NAME/src/external -I./src -I./vendor)
+    fi
 fi
 
-RAYLIB_A="$RAYLIB_NAME/lib/libraylib.a"
-INCLUDES=(-I./$RAYLIB_NAME/include -I./src -I./vendor)
 LINK_ARCHIVES=("$RAYLIB_A")
 EXTRA_SRC=""
 
@@ -139,9 +215,9 @@ if [ "$MODE" = "local" ] || [ "$MODE" = "fast" ]; then
         "${INCLUDES[@]}"
         "$SRC_DIR/$ENV.c" $EXTRA_SRC -o "$OUTPUT_NAME"
         "${LINK_ARCHIVES[@]}"
-        "${STANDALONE_LDFLAGS[@]}"
+        "${RAYLIB_LINK_LDFLAGS[@]}"
         -lm -lpthread -fopenmp
-        -DPLATFORM_DESKTOP
+        "$RAYLIB_PLATFORM"
     )
     echo "Compiling $ENV..."
     ${CC:-clang} "${CLANG_OPT[@]}" "${FLAGS[@]}"
@@ -208,13 +284,6 @@ if [ -z "$NCCL_LFLAG" ]; then
     NCCL_LFLAG=$(python -c "import nvidia.nccl, os; print('-L' + os.path.join(nvidia.nccl.__path__[0], 'lib'))" 2>/dev/null || echo "")
 fi
 
-WHEEL_RPATH_FLAGS=()
-for lib_flag in "$CUDNN_LFLAG" "$NCCL_LFLAG"; do
-    if [[ "$lib_flag" == -L* ]]; then
-        WHEEL_RPATH_FLAGS+=("-Wl,-rpath,${lib_flag#-L}")
-    fi
-done
-
 export CCACHE_DIR="${CCACHE_DIR:-$HOME/.ccache}"
 export CCACHE_BASEDIR="$(pwd)"
 export CCACHE_COMPILERCHECK=content
@@ -239,10 +308,10 @@ if [ ! -f "$BINDING_SRC" ]; then
 fi
 
 echo "Compiling static library for $ENV..."
-${CC:-clang} -c "${CLANG_OPT[@]}" $EXTRA_CFLAGS \
+${CC:-clang} -c "${CLANG_OPT[@]}" \
     -I. -Isrc -I$SRC_DIR -Ivendor \
-    -I./$RAYLIB_NAME/include -I$CUDA_HOME/include \
-    -DPLATFORM_DESKTOP \
+    "${INCLUDES[@]}" -I$CUDA_HOME/include \
+    "$RAYLIB_PLATFORM" \
     -fno-semantic-interposition -fvisibility=hidden \
     -fPIC -fopenmp \
     "$BINDING_SRC" -o "$STATIC_OBJ"
@@ -260,11 +329,11 @@ if [ -z "$MODE" ]; then
     $NVCC -c -arch=$ARCH -Xcompiler -fPIC \
         -Xcompiler=-D_GLIBCXX_USE_CXX11_ABI=1 \
         -Xcompiler=-DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION \
-        -Xcompiler=-DPLATFORM_DESKTOP \
+        -Xcompiler=$RAYLIB_PLATFORM \
         -std=c++17 \
         -I. -Isrc \
         -I$PYTHON_INCLUDE -I$PYBIND_INCLUDE -I$NUMPY_INCLUDE \
-        -I$CUDA_HOME/include $CUDNN_IFLAG $NCCL_IFLAG -I$RAYLIB_NAME/include \
+        -I$CUDA_HOME/include $CUDNN_IFLAG $NCCL_IFLAG "${INCLUDES[@]}" \
         -Xcompiler=-fopenmp \
         -DOBS_TENSOR_T=$OBS_TENSOR_T \
         -DENV_NAME=$ENV \
@@ -275,7 +344,6 @@ if [ -z "$MODE" ]; then
         ${CXX:-g++} -shared -fPIC -fopenmp
         build/bindings.o "$STATIC_LIB" "$RAYLIB_A"
         -L$CUDA_HOME/lib64 $CUDNN_LFLAG $NCCL_LFLAG
-        "${WHEEL_RPATH_FLAGS[@]}"
         -lcudart -lnccl -lnvidia-ml -lcublas -lcusolver -lcurand -lcudnn
         $OMP_LIB $LINK_OPT
         "${SHARED_LDFLAGS[@]}"
@@ -288,7 +356,7 @@ elif [ "$MODE" = "cpu" ]; then
     echo "Compiling CPU training backend..."
     ${CXX:-g++} -c -fPIC -fopenmp \
         -D_GLIBCXX_USE_CXX11_ABI=1 \
-        -DPLATFORM_DESKTOP \
+        "$RAYLIB_PLATFORM" \
         -std=c++17 \
         -I. -Isrc \
         -I$PYTHON_INCLUDE -I$PYBIND_INCLUDE \
@@ -310,10 +378,10 @@ elif [ "$MODE" = "profile" ]; then
     echo "Compiling profile binary ($ARCH)..."
     $NVCC $NVCC_OPT -arch=$ARCH -std=c++17 \
         -I. -Isrc -I$SRC_DIR -Ivendor \
-        -I$CUDA_HOME/include $CUDNN_IFLAG $NCCL_IFLAG -I$RAYLIB_NAME/include \
+        -I$CUDA_HOME/include $CUDNN_IFLAG $NCCL_IFLAG "${INCLUDES[@]}" \
         -DOBS_TENSOR_T=$OBS_TENSOR_T \
         -DENV_NAME=$ENV \
-        -Xcompiler=-DPLATFORM_DESKTOP \
+        -Xcompiler=$RAYLIB_PLATFORM \
         $PRECISION \
         -Xcompiler=-fopenmp \
         tests/profile_kernels.cu vendor/ini.c \
diff --git a/ocean/checkers/checkers.h b/ocean/checkers/checkers.h
index 8976ecf2ce..2c336746d0 100644
--- a/ocean/checkers/checkers.h
+++ b/ocean/checkers/checkers.h
@@ -752,10 +752,10 @@ void c_render(Checkers *env) {
       case AGENT_PAWN:
         piece_color = BLUE;
         DrawCircle(center_x, center_y, radius, piece_color);
-        DrawCircleGradient(center_x - radius / 3, center_y - radius / 3,
+        DrawCircleGradient((Vector2){center_x - radius / 3, center_y - radius / 3},
                            radius / 3, (Color){255, 255, 255, 80},
                            (Color){255, 255, 255, 10});
-        DrawCircleGradient(center_x, center_y, radius,
+        DrawCircleGradient((Vector2){center_x, center_y}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
         break;
@@ -763,17 +763,17 @@ void c_render(Checkers *env) {
       case AGENT_KING:
         piece_color = BLUE;
         DrawCircle(center_x, center_y, radius, piece_color);
-        DrawCircleGradient(center_x, center_y, radius,
+        DrawCircleGradient((Vector2){center_x, center_y}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
 
-        DrawCircleGradient(center_x, center_y - king_offset / 2, radius,
+        DrawCircleGradient((Vector2){center_x, center_y - king_offset / 2}, radius,
                            (Color){20, 20, 20, 60}, (Color){20, 20, 20, 30});
         DrawCircle(center_x, center_y - king_offset, radius, piece_color);
         DrawCircleGradient(
-            center_x - radius / 3, center_y - radius / 3 - king_offset,
+            (Vector2){center_x - radius / 3, center_y - radius / 3 - king_offset},
             radius / 3, (Color){255, 255, 255, 80}, (Color){255, 255, 255, 10});
-        DrawCircleGradient(center_x, center_y - king_offset, radius,
+        DrawCircleGradient((Vector2){center_x, center_y - king_offset}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
         break;
@@ -781,10 +781,10 @@ void c_render(Checkers *env) {
       case OPPONENT_PAWN:
         piece_color = RED;
         DrawCircle(center_x, center_y, radius, piece_color);
-        DrawCircleGradient(center_x - radius / 3, center_y - radius / 3,
+        DrawCircleGradient((Vector2){center_x - radius / 3, center_y - radius / 3},
                            radius / 3, (Color){255, 255, 255, 80},
                            (Color){255, 255, 255, 10});
-        DrawCircleGradient(center_x, center_y, radius,
+        DrawCircleGradient((Vector2){center_x, center_y}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
         break;
@@ -792,17 +792,17 @@ void c_render(Checkers *env) {
       case OPPONENT_KING:
         piece_color = RED;
         DrawCircle(center_x, center_y, radius, piece_color);
-        DrawCircleGradient(center_x, center_y, radius,
+        DrawCircleGradient((Vector2){center_x, center_y}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
 
-        DrawCircleGradient(center_x, center_y - king_offset / 2, radius,
+        DrawCircleGradient((Vector2){center_x, center_y - king_offset / 2}, radius,
                            (Color){20, 20, 20, 60}, (Color){20, 20, 20, 30});
         DrawCircle(center_x, center_y - king_offset, radius, piece_color);
         DrawCircleGradient(
-            center_x - radius / 3, center_y - radius / 3 - king_offset,
+            (Vector2){center_x - radius / 3, center_y - radius / 3 - king_offset},
             radius / 3, (Color){255, 255, 255, 80}, (Color){255, 255, 255, 10});
-        DrawCircleGradient(center_x, center_y - king_offset, radius,
+        DrawCircleGradient((Vector2){center_x, center_y - king_offset}, radius,
                            (Color){255, 255, 255, 50},
                            (Color){255, 255, 255, 5});
         break;
diff --git a/ocean/go/go.h b/ocean/go/go.h
index 03c2224e0d..d78e4270ea 100644
--- a/ocean/go/go.h
+++ b/ocean/go/go.h
@@ -969,11 +969,11 @@ void c_render(CGo* env) {
         int inner = (env->grid_square_size / 2) - 4;
         int outer = (env->grid_square_size / 2) - 2;
         if (position_state == 1) {
-            DrawCircleGradient(circle_x, circle_y, outer, STONE_GRAY, BLACK);
+            DrawCircleGradient((Vector2){circle_x, circle_y}, outer, STONE_GRAY, BLACK);
         }
         // if enemy draw circle tile for white
         if (position_state == 2) {
-            DrawCircleGradient(circle_x, circle_y, inner, WHITE, GRAY);
+            DrawCircleGradient((Vector2){circle_x, circle_y}, inner, WHITE, GRAY);
         }
     }
     // design a pass button