diff --git a/VERSION b/VERSION
index f225a78..aedc15b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.5.2
+2.5.3
diff --git a/dependencies/gles-compatibility-layer/src b/dependencies/gles-compatibility-layer/src
index 5bf535a..67a8d02 160000
--- a/dependencies/gles-compatibility-layer/src
+++ b/dependencies/gles-compatibility-layer/src
@@ -1 +1 @@
-Subproject commit 5bf535a68fe1ca0381b4628859e642b40a166017
+Subproject commit 67a8d026aa5aef062dae654d418c3cd09417c0c1
diff --git a/dependencies/glfw/src b/dependencies/glfw/src
index 3eaf125..b4c3ef9 160000
--- a/dependencies/glfw/src
+++ b/dependencies/glfw/src
@@ -1 +1 @@
-Subproject commit 3eaf1255b29fdf5c2895856c7be7d7185ef2b241
+Subproject commit b4c3ef9d0fdf46845f3e81e5d989dab06e71e6c1
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 39e6d38..a06335b 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+**2.5.3**
+* Add ``Replace Block Highlight With Outline`` Feature Flag (Enabled By Default)
+  * By Default, The Outline Width Is Set Using The GUI Scale
+  * This Can Be Overridden Using The ``MCPI_BLOCK_OUTLINE_WIDTH`` Environmental Variable
+* Added ``overwrite_calls_within`` Function
+
 **2.5.2**
 * Add ``3D Chest Model`` Feature Flag (Enabled By Default)
 * Stop Using Jenkins
@@ -7,7 +13,7 @@
 * Replace LibPNG
 
 **2.5.1**
-* Allow Overriidng Custom Skin Server Using ``MCPI_SKIN_SERVER`` Environmental Variable
+* Allow Overriding Custom Skin Server Using ``MCPI_SKIN_SERVER`` Environmental Variable
 * Fix Bug With SDK Generation
 
 **2.5.0**
diff --git a/images/start.png b/images/start.png
index 491ee6a..e89cdda 100644
Binary files a/images/start.png and b/images/start.png differ
diff --git a/launcher/src/client/available-feature-flags b/launcher/src/client/available-feature-flags
index 5fcacab..a8436a3 100644
--- a/launcher/src/client/available-feature-flags
+++ b/launcher/src/client/available-feature-flags
@@ -50,3 +50,4 @@ FALSE Disable Block Tinting
 TRUE Disable Hostile AI In Creative Mode
 TRUE Load Custom Skins
 TRUE 3D Chest Model
+TRUE Replace Block Highlight With Outline
diff --git a/libreborn/src/patch/patch.c b/libreborn/src/patch/patch.c
index 3e5654c..488cc40 100644
--- a/libreborn/src/patch/patch.c
+++ b/libreborn/src/patch/patch.c
@@ -122,6 +122,7 @@ void _overwrite_call(const char *file, int line, void *start, void *target) {
 }
 
 // Overwrite All B(L) Intrusctions That Target The Specified Address
+#define NO_CALLSITE_ERROR "(%s:%i) Unable To Find Callsites For 0x%08x"
 void _overwrite_calls(const char *file, int line, void *start, void *target) {
     // Add New Target To Code Block
     update_code_block(target);
@@ -140,10 +141,10 @@ void _overwrite_calls(const char *file, int line, void *start, void *target) {
 
     // Check
     if (data.found < 1) {
-        ERR("(%s:%i) Unable To Find Callsites For 0x%08x", file, line, (uint32_t) start);
+        ERR(NO_CALLSITE_ERROR, file, line, (uint32_t) start);
     }
 }
-void _overwrite_calls_within(const char *file, int line, void *from, void *to, void *target, void *replacement) {
+void _overwrite_calls_within(const char *file, int line, void *from /* inclusive */, void *to /* exclusive */, void *target, void *replacement) {
     // Add New Target To Code Block
     update_code_block(replacement);
 
@@ -151,7 +152,7 @@ void _overwrite_calls_within(const char *file, int line, void *from, void *to, v
     int found = _overwrite_calls_within_internal(file, line, from, to, target, code_block);
     // Check
     if (found < 1) {
-        ERR("(%s:%i) Unable To Find Callsites For 0x%08x", file, line, (uint32_t) target);
+        ERR(NO_CALLSITE_ERROR, file, line, (uint32_t) target);
     }
 
     // Increment Code Block Position
diff --git a/media-layer/core/gles/src/passthrough.c b/media-layer/core/gles/src/passthrough.c
index 53f9c08..66720a8 100644
--- a/media-layer/core/gles/src/passthrough.c
+++ b/media-layer/core/gles/src/passthrough.c
@@ -1,6 +1,6 @@
 #include <GLES/gl.h>
 
-#include "../dependencies/gles-compatibility-layer/src/passthrough.h"
+#include "../../../../dependencies/gles-compatibility-layer/src/src/passthrough.h"
 
 GL_FUNC(glFogfv, void, (GLenum pname, const GLfloat *params));
 void glFogfv(GLenum pname, const GLfloat *params) {
diff --git a/media-layer/proxy/src/GLESv1_CM.c b/media-layer/proxy/src/GLESv1_CM.c
index 81b77a9..1781e6f 100644
--- a/media-layer/proxy/src/GLESv1_CM.c
+++ b/media-layer/proxy/src/GLESv1_CM.c
@@ -926,6 +926,10 @@ static int get_glGetFloatv_params_size(GLenum pname) {
         case GL_PROJECTION_MATRIX: {
             return 16;
         }
+        case GL_ALIASED_LINE_WIDTH_RANGE:
+        case GL_SMOOTH_LINE_WIDTH_RANGE: {
+            return 2;
+        }
         default: {
             PROXY_ERR("Unsupported glGetFloatv Property: %u", pname);
         }
diff --git a/mods/src/misc/misc.c b/mods/src/misc/misc.c
index d4a5802..0afdfe8 100644
--- a/mods/src/misc/misc.c
+++ b/mods/src/misc/misc.c
@@ -4,7 +4,9 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 
+#ifndef MCPI_HEADLESS_MODE
 #include <GLES/gl.h>
+#endif
 
 #include <libreborn/libreborn.h>
 #include <symbols/minecraft.h>
@@ -495,6 +497,35 @@ static unsigned char *ContainerMenu_destructor_injection(unsigned char *containe
     return (*ContainerMenu_destructor)(container_menu);
 }
 
+#ifndef MCPI_HEADLESS_MODE
+// Custom Outline Color
+static void glColor4f_injection(__attribute__((unused)) GLfloat red, __attribute__((unused)) GLfloat green, __attribute__((unused)) GLfloat blue, __attribute__((unused)) GLfloat alpha) {
+    // Set Color
+    glColor4f(0, 0, 0, 1);
+
+    // Find Line Width
+    char *custom_line_width = getenv("MCPI_BLOCK_OUTLINE_WIDTH");
+    float line_width;
+    if (custom_line_width != NULL) {
+        // Custom
+        line_width = strtof(custom_line_width, NULL);
+    } else {
+        // Guess
+        line_width = 1.75 / (*InvGuiScale);
+    }
+    // Clamp Line Width
+    float range[2];
+    glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, range);
+    if (range[1] < line_width) {
+        line_width = range[1];
+    } else if (range[0] > line_width) {
+        line_width = range[0];
+    }
+    // Set Line Width
+    glLineWidth(line_width);
+}
+#endif
+
 // Init
 static void nop() {
 }
@@ -662,6 +693,16 @@ void init_misc() {
     }
     patch_address((void *) 0x115b48, (void *) ChestTileEntity_shouldSave_injection);
 
+#ifndef MCPI_HEADLESS_MODE
+    // Replace Block Highlight With Outline
+    if (feature_has("Replace Block Highlight With Outline", server_disabled)) {
+        overwrite((void *) LevelRenderer_renderHitSelect, (void *) LevelRenderer_renderHitOutline);
+        unsigned char fix_outline_patch[4] = {0x00, 0xf0, 0x20, 0xe3}; // "nop"
+        patch((void *) 0x4d830, fix_outline_patch);
+        overwrite_call((void *) 0x4d764, (void *) glColor4f_injection);
+    }
+#endif
+
     // Init C++ And Logging
     _init_misc_cpp();
     _init_misc_logging();
diff --git a/scripts/build.sh b/scripts/build.sh
index 888860b..e166ddf 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -6,6 +6,7 @@ set -e
 build() {
     # Use Build Dir
     if [ ! -f "build/${MODE}-${ARCH}/arm/build.ninja" ] || [ ! -f "build/${MODE}-${ARCH}/native/build.ninja" ]; then
+        # Run CMake
         ./scripts/setup.sh "${MODE}" "${ARCH}"
     fi
     cd "build/${MODE}-${ARCH}"
diff --git a/scripts/test.sh b/scripts/test.sh
index 053065f..6b873a2 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -2,6 +2,8 @@
 
 set -e
 
+## Server Test
+
 # Build Test
 ARCH="$(dpkg-architecture -qDEB_BUILD_ARCH)"
 ./scripts/setup.sh server "${ARCH}"
@@ -19,6 +21,8 @@ cd build/test
 minecraft-pi-reborn-server --only-generate
 cd ../../
 
+## Client Test
+
 # Build Benchmark
 ./scripts/setup.sh client "${ARCH}" -DMCPI_HEADLESS_MODE=ON
 ./scripts/build.sh client "${ARCH}"
@@ -32,3 +36,16 @@ export _MCPI_SKIP_ROOT_CHECK=1
 # Run Benchmark
 export HOME="$(pwd)/build/test"
 minecraft-pi-reborn-client --default --no-cache --benchmark
+
+## Example Mods Test
+
+# Build
+for project in example-mods/*/; do
+    cd "${project}"
+    rm -rf build
+    mkdir build
+    cd build
+    cmake -GNinja ..
+    cmake --build .
+    cd ../../../
+done
diff --git a/symbols/include/symbols/minecraft.h b/symbols/include/symbols/minecraft.h
index 7103464..7b1a916 100644
--- a/symbols/include/symbols/minecraft.h
+++ b/symbols/include/symbols/minecraft.h
@@ -574,6 +574,10 @@ static LevelRenderer_renderDebug_t LevelRenderer_renderDebug = (LevelRenderer_re
 typedef void (*LevelRenderer_generateSky_t)(unsigned char *level_renderer);
 static LevelRenderer_generateSky_t LevelRenderer_generateSky = (LevelRenderer_generateSky_t) 0x4d0d4;
 
+typedef void (*LevelRenderer_renderHitSelect_t)(unsigned char *level_renderer, unsigned char* player, unsigned char *hit_result, int32_t i, void *vp, float f);
+static LevelRenderer_renderHitSelect_t LevelRenderer_renderHitSelect = (LevelRenderer_renderHitSelect_t) 0x4e318;
+static LevelRenderer_renderHitSelect_t LevelRenderer_renderHitOutline = (LevelRenderer_renderHitSelect_t) 0x4dc14;
+
 static uint32_t LevelRenderer_minecraft_property_offset = 0x4; // Minecraft *
 
 // PerfRenderer