diff --git a/config/ext.json b/config/ext.json
index 8a75b502..2d94cb32 100644
--- a/config/ext.json
+++ b/config/ext.json
@@ -16,6 +16,14 @@
     "calendar": {
         "type": "builtin"
     },
+    "crypto": {
+        "type": "external",
+        "arg-type": "with",
+        "source": "ext-crypto",
+        "lib-depends": [
+            "openssl"
+        ]
+    },
     "ctype": {
         "type": "builtin"
     },
@@ -122,6 +130,10 @@
             "libiconv"
         ]
     },
+    "igbinary": {
+        "type": "external",
+        "source": "igbinary"
+    },
     "imagick": {
         "type": "external",
         "source": "ext-imagick",
@@ -164,6 +176,14 @@
             "openssl"
         ]
     },
+    "leveldb": {
+        "type": "external",
+        "arg-type": "with-prefix",
+        "source": "pmmp-leveldb",
+        "lib-depends": [
+            "leveldb"
+        ]
+    },
     "mbregex": {
         "type": "builtin",
         "arg-type": "custom",
@@ -213,6 +233,10 @@
             "zlib"
         ]
     },
+    "morton": {
+        "type": "external",
+        "source": "ext-morton"
+    },
     "mysqli": {
         "type": "builtin",
         "arg-type": "with",
@@ -299,6 +323,16 @@
             "zlib"
         ]
     },
+    "pmmp-chunkutils2": {
+        "type": "external",
+        "source": "pmmp-chunkutils2",
+        "arg-type": "custom",
+        "cpp-extension": true
+    },
+    "pmmpthread": {
+        "type": "external",
+        "source": "pmmpthread"
+    },
     "posix": {
         "type": "builtin",
         "unix-only": true
diff --git a/config/lib.json b/config/lib.json
index 14d66130..404ea5b1 100644
--- a/config/lib.json
+++ b/config/lib.json
@@ -163,6 +163,13 @@
             "libsodium"
         ]
     },
+    "leveldb": {
+        "source": "leveldb",
+        "static-libs-unix": [
+            "libleveldb.a"
+        ],
+        "cpp-library": true
+    },
     "libargon2": {
         "source": "libargon2",
         "static-libs-unix": [
diff --git a/config/source.json b/config/source.json
index 09cd2064..7e3b1fb1 100644
--- a/config/source.json
+++ b/config/source.json
@@ -42,6 +42,16 @@
             "path": "COPYING"
         }
     },
+    "ext-crypto": {
+        "type": "git",
+        "path": "php-src/ext/crypto",
+        "rev": "master",
+        "url": "https://github.com/bukka/php-crypto.git",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "ext-event": {
         "type": "url",
         "url": "https://bitbucket.org/osmanov/pecl-event/get/3.0.8.tar.gz",
@@ -80,6 +90,16 @@
             "path": "LICENSE"
         }
     },
+    "ext-morton": {
+        "type": "git",
+        "path": "php-src/ext/morton",
+        "rev": "master",
+        "url": "https://github.com/pmmp/ext-morton.git",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "ext-snappy": {
         "type": "git",
         "path": "php-src/ext/snappy",
@@ -136,6 +156,15 @@
             "path": "LICENSE"
         }
     },
+    "igbinary": {
+        "type": "ghtar",
+        "path": "php-src/ext/igbinary",
+        "repo": "igbinary/igbinary",
+        "license": {
+            "type": "file",
+            "path": "COPYING"
+        }
+    },
     "imagemagick": {
         "type": "ghtar",
         "repo": "ImageMagick/ImageMagick",
@@ -172,6 +201,15 @@
             "path": "LICENSE"
         }
     },
+    "leveldb": {
+        "type": "git",
+        "rev": "mojang-compatible",
+        "url": "https://github.com/pmmp/leveldb.git",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "libargon2": {
         "type": "git",
         "rev": "master",
@@ -392,6 +430,34 @@
             "path": "COPYING"
         }
     },
+    "pmmp-chunkutils2": {
+        "type": "ghtar",
+        "path": "php-src/ext/chunkutils2",
+        "repo": "pmmp/ext-chunkutils2",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
+    "pmmp-leveldb": {
+        "type": "git",
+        "path": "php-src/ext/leveldb",
+        "rev": "pmmp-mojang-compatible",
+        "url": "https://github.com/pmmp/php-leveldb.git",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
+    "pmmpthread": {
+        "type": "ghtar",
+        "path": "php-src/ext/pmmpthread",
+        "repo": "pmmp/ext-pmmpthread",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "postgresql": {
         "type": "url",
         "url": "https://ftp.postgresql.org/pub/source/v16.1/postgresql-16.1.tar.gz",
diff --git a/src/SPC/builder/extension/pmmp_chunkutils2.php b/src/SPC/builder/extension/pmmp_chunkutils2.php
new file mode 100644
index 00000000..d6b7152d
--- /dev/null
+++ b/src/SPC/builder/extension/pmmp_chunkutils2.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\extension;
+
+use SPC\builder\Extension;
+use SPC\util\CustomExt;
+
+#[CustomExt('pmmp-chunkutils2')]
+class pmmp_chunkutils2 extends Extension
+{
+    public function getDistName(): string
+    {
+        return 'chunkutils2';
+    }
+
+    public function getUnixConfigureArg(): string
+    {
+        return '--enable-chunkutils2';
+    }
+}
diff --git a/src/SPC/builder/linux/library/leveldb.php b/src/SPC/builder/linux/library/leveldb.php
new file mode 100644
index 00000000..bec3ec1f
--- /dev/null
+++ b/src/SPC/builder/linux/library/leveldb.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\linux\library;
+
+class leveldb extends LinuxLibraryBase
+{
+    use \SPC\builder\unix\library\leveldb;
+
+    public const NAME = 'leveldb';
+}
diff --git a/src/SPC/builder/macos/library/leveldb.php b/src/SPC/builder/macos/library/leveldb.php
new file mode 100644
index 00000000..dd5f5141
--- /dev/null
+++ b/src/SPC/builder/macos/library/leveldb.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\macos\library;
+
+class leveldb extends MacOSLibraryBase
+{
+    use \SPC\builder\unix\library\leveldb;
+
+    public const NAME = 'leveldb';
+}
diff --git a/src/SPC/builder/unix/library/leveldb.php b/src/SPC/builder/unix/library/leveldb.php
new file mode 100644
index 00000000..11b0af8e
--- /dev/null
+++ b/src/SPC/builder/unix/library/leveldb.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\unix\library;
+
+use SPC\exception\FileSystemException;
+use SPC\exception\RuntimeException;
+use SPC\store\FileSystem;
+
+trait leveldb
+{
+    /**
+     * @throws FileSystemException
+     * @throws RuntimeException
+     */
+    protected function build(): void
+    {
+        // CMake needs a clean build directory
+        FileSystem::resetDir($this->source_dir . '/build');
+        // Start build
+        shell()->cd($this->source_dir . '/build')
+            ->exec(
+                "cmake {$this->builder->makeCmakeArgs()} " .
+                '-DBUILD_SHARED_LIBS=OFF ' .
+                '-DLEVELDB_BUILD_TESTS=OFF ' .
+                '-DLEVELDB_BUILD_BENCHMARKS=OFF ' .
+                '..'
+            )
+            ->exec("cmake --build . -j {$this->builder->concurrency}")
+            ->exec('make install DESTDIR=' . BUILD_ROOT_PATH);
+    }
+}