diff --git a/src/main/java/mc/core/world/Block.java b/src/main/java/mc/core/world/Block.java
new file mode 100644
index 0000000..44b2f98
--- /dev/null
+++ b/src/main/java/mc/core/world/Block.java
@@ -0,0 +1,21 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-04-15
+ */
+package mc.core.world;
+
+import mc.core.Location;
+
+public interface Block {
+    Location getLocation();
+    void setLocation(Location location);
+
+    int getType();
+    void setType(int value);
+
+    int getMetadata();
+    void setMetadata(int value);
+
+    int getLight();
+    void setLight(int value);
+}
diff --git a/src/main/java/mc/core/world/Chunk.java b/src/main/java/mc/core/world/Chunk.java
new file mode 100644
index 0000000..e3d681d
--- /dev/null
+++ b/src/main/java/mc/core/world/Chunk.java
@@ -0,0 +1,23 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-04-15
+ */
+package mc.core.world;
+
+/* 16x256x16 */
+public interface Chunk {
+    Block getBlock(int x, int y, int z);
+    void setBlock(Block block);
+
+    int getBlockType(int x, int y, int z);
+    void setBlockType(int x, int y, int z, int type);
+
+    int getBlockMetadata(int x, int y, int z);
+    void setBlockMetadata(int x, int y, int z, int metadata);
+
+    int getBlockLight(int x, int y, int z);
+    void setBlockLight(int x, int y, int z, int lightLevel);
+
+    int getSkyLight(int x, int y, int z);
+    void setSkyLight(int x, int y, int z, int lightLevel);
+}
diff --git a/src/main/java/mc/core/world/World.java b/src/main/java/mc/core/world/World.java
new file mode 100644
index 0000000..be5002b
--- /dev/null
+++ b/src/main/java/mc/core/world/World.java
@@ -0,0 +1,15 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-04-15
+ */
+package mc.core.world;
+
+import mc.core.Location;
+
+public interface World {
+    Location getSpawn();
+    void setSpawn(Location location);
+
+    Chunk getChunk(int x, int z);
+    void setChunk(int x, int z, Chunk chunk);
+}