diff --git a/.gitignore b/.gitignore
index ea8c4bf..ccb5166 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+.vscode
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index 3e5b386..85ba78c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -12,6 +12,7 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 name = "golrs"
 version = "0.1.0"
 dependencies = [
+ "metrohash",
  "termion",
 ]
 
@@ -21,6 +22,12 @@ version = "0.2.132"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
 
+[[package]]
+name = "metrohash"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ba553cb19e2acbc54baa16faef215126243fe45e53357a3b2e9f4ebc7b0506c"
+
 [[package]]
 name = "numtoa"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index 77b3566..04865f0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,3 +9,4 @@ repository = "https://github.com/MajorBarnulf/golrs"
 
 [dependencies]
 termion = "1.5"
+metrohash = "1.0"
\ No newline at end of file
diff --git a/patterns/simple.txt b/patterns/bar.txt
similarity index 66%
rename from patterns/simple.txt
rename to patterns/bar.txt
index 98f6f22..046ea95 100644
--- a/patterns/simple.txt
+++ b/patterns/bar.txt
@@ -1,3 +1,3 @@
  # 
  # 
- # 
\ No newline at end of file
+ # 
diff --git a/patterns/gen.ts b/patterns/gen.ts
new file mode 100755
index 0000000..e96a460
--- /dev/null
+++ b/patterns/gen.ts
@@ -0,0 +1,21 @@
+#!/usr/bin/env -S deno run
+
+const { args } = Deno;
+
+const size = parseInt(args[0] ?? "5");
+const frequency = parseFloat(args[1] ?? "0.5");
+
+
+function* range(from: number, to: number) {
+    let current = from;
+    while (current < to) yield current++;
+}
+
+let result = "";
+for (const _y of range(0, size)) {
+    for (const _x of range(0, size))
+        result += Math.random() < frequency ? '#' : ' ';
+    result += '\n';
+}
+
+console.log(result);
\ No newline at end of file
diff --git a/src/world/hashed_world.rs b/src/world/hashed_world.rs
index 3f43646..aba5fd0 100644
--- a/src/world/hashed_world.rs
+++ b/src/world/hashed_world.rs
@@ -1,5 +1,7 @@
 use std::collections::HashMap;
 
+use metrohash::MetroBuildHasher;
+
 use crate::{pos, Cell, Pos, World};
 
 const CHUNK_SIZE: usize = 16;
@@ -34,7 +36,7 @@ struct ChunkPos(Pos);
 
 #[derive(Debug, Clone, Default)]
 pub struct HashedWorld {
-    chunks: HashMap<ChunkPos, Chunk>,
+    chunks: HashMap<ChunkPos, Chunk, MetroBuildHasher>,
 }
 
 impl HashedWorld {