diff --git a/src/main/java/io/github/simplexdev/simplexcore/SimplexCorePlugin.java b/src/main/java/io/github/simplexdev/simplexcore/SimplexCorePlugin.java
index a97d698..5902940 100644
--- a/src/main/java/io/github/simplexdev/simplexcore/SimplexCorePlugin.java
+++ b/src/main/java/io/github/simplexdev/simplexcore/SimplexCorePlugin.java
@@ -30,6 +30,7 @@ public final class SimplexCorePlugin extends SimplexAddon<SimplexCorePlugin> {
             instances.getRegistry().register(this);
             instances.getCommandLoader().classpath(Command_info.class).load();
             instances.getConfig().reload();
+            instances.getInternals().reload();
             //
             SimplexListener.register(new DependencyListener(), this);
             new Announcer();
diff --git a/src/main/java/io/github/simplexdev/simplexcore/utils/Constants.java b/src/main/java/io/github/simplexdev/simplexcore/utils/Constants.java
index 73e7127..d168297 100644
--- a/src/main/java/io/github/simplexdev/simplexcore/utils/Constants.java
+++ b/src/main/java/io/github/simplexdev/simplexcore/utils/Constants.java
@@ -11,33 +11,34 @@ import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitScheduler;
 
+import java.io.File;
 import java.util.logging.Logger;
 
 public final class Constants {
     private static final SimplexCorePlugin plugin = JavaPlugin.getPlugin(SimplexCorePlugin.class);
-    private static final Server server = plugin.getServer();
-    private static final Logger logger = plugin.getLogger();
-    private static final PluginManager manager = server.getPluginManager();
-    private static final BukkitScheduler scheduler = server.getScheduler();
 
     public static SimplexCorePlugin getPlugin() {
         return plugin;
     }
 
     public static Server getServer() {
-        return server;
+        return plugin.getServer();
     }
 
     public static Logger getLogger() {
-        return logger;
+        return plugin.getServer().getLogger();
     }
 
     public static PluginManager getManager() {
-        return manager;
+        return plugin.getServer().getPluginManager();
     }
 
     public static BukkitScheduler getScheduler() {
-        return scheduler;
+        return plugin.getServer().getScheduler();
+    }
+
+    public static File getDataFolder() {
+        return plugin.getDataFolder();
     }
 }
 
diff --git a/src/main/java/io/github/simplexdev/simplexcore/utils/Instances.java b/src/main/java/io/github/simplexdev/simplexcore/utils/Instances.java
index cd83b86..063246b 100644
--- a/src/main/java/io/github/simplexdev/simplexcore/utils/Instances.java
+++ b/src/main/java/io/github/simplexdev/simplexcore/utils/Instances.java
@@ -10,6 +10,7 @@ public final class Instances {
     private final DependencyManagement dpm = new DependencyManagement();
     private final Yaml config = new YamlFactory(Constants.getPlugin()).setDefaultPathways();
     private final TimeValues time = new TimeValues();
+    private final Yaml internals = new YamlFactory(Constants.getPlugin()).from("internals.yml", Constants.getDataFolder(), "internals.yml");
 
     public synchronized AddonRegistry getRegistry() {
         return AddonRegistry.getInstance();
@@ -30,4 +31,6 @@ public final class Instances {
     public Yaml getConfig() {
         return config;
     }
+
+    public Yaml getInternals() { return internals; }
 }
diff --git a/src/main/java/io/github/simplexdev/simplexcore/utils/Utilities.java b/src/main/java/io/github/simplexdev/simplexcore/utils/Utilities.java
index 824dbd5..cbb659a 100644
--- a/src/main/java/io/github/simplexdev/simplexcore/utils/Utilities.java
+++ b/src/main/java/io/github/simplexdev/simplexcore/utils/Utilities.java
@@ -2,17 +2,21 @@ package io.github.simplexdev.simplexcore.utils;
 
 import io.github.simplexdev.api.func.Path;
 import io.github.simplexdev.simplexcore.ban.BanType;
+import org.bukkit.Bukkit;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.SplittableRandom;
 import java.util.function.Consumer;
+import java.util.regex.Pattern;
 import java.util.stream.Stream;
 
 public final class Utilities {
     private static final SplittableRandom random = new SplittableRandom();
     private static final SplittableRandom numbers = new SplittableRandom();
+    private static final List<String> versions = Constants.getPlugin().getInstances().getInternals().getStringList(pathway("supported_versions"));
+
     private static final List<Character> list = new ArrayList<>() {{
         add('0');
         add('1');
@@ -73,4 +77,31 @@ public final class Utilities {
     public static Path pathway(String pathway) {
         return () -> pathway;
     }
+
+    public static String getNMSVersion() {
+        return Bukkit.getServer().getClass().getPackage().getName().substring(23).replaceFirst("v", "");
+    }
+
+    public static String[] formatVersion(String version) {
+        return (version).split(":");
+    }
+
+    public static boolean matchVersions() {
+        return versions.contains(getNMSVersion());
+    }
+
+    public static String getSpigotVersion() {
+        if (!matchVersions()) return "UNKNOWN";
+
+        for (String version : versions) {
+            String nms = formatVersion(version)[0];
+            String spigot = formatVersion(version)[1];
+            if (nms.equalsIgnoreCase(getNMSVersion())) {
+                return spigot;
+            }
+        }
+
+        throw new RuntimeException("Unable to determine the Spigot version: NMS v"
+                + getNMSVersion() + " is not supported!");
+    }
 }
\ No newline at end of file
diff --git a/src/main/resources/internals.yml b/src/main/resources/internals.yml
new file mode 100644
index 0000000..ea2c796
--- /dev/null
+++ b/src/main/resources/internals.yml
@@ -0,0 +1,11 @@
+supported_versions:
+  - 1_10_R1:1.10.2
+  - 1_11_R1:1.11
+  - 1_12_R1:1.12
+  - 1_13_R1:1.13
+  - 1_13_R2:1.13.1
+  - 1_14_R1:1.14
+  - 1_15_R1:1.15
+  - 1_16_R1:1.16.1
+  - 1_16_R2:1.16.3
+  - 1_16_R3:1.16.4
\ No newline at end of file