diff --git a/package-lock.json b/package-lock.json
index 3b7dd3b..bbade42 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,8 +10,9 @@
       "hasInstallScript": true,
       "license": "MIT",
       "devDependencies": {
-        "@ca-ts/algo": "npm:@jsr/ca-ts__algo@^0.2.0",
+        "@ca-ts/algo": "npm:@jsr/ca-ts__algo@^0.4.0",
         "@ca-ts/rle": "npm:@jsr/ca-ts__rle@^0.8.0",
+        "@ca-ts/rule": "npm:@jsr/ca-ts__rule@^0.2.0",
         "babylonjs": "^7.29.0",
         "typescript": "^5.6.3",
         "vite": "^5.4.1"
@@ -19,9 +20,9 @@
     },
     "node_modules/@ca-ts/algo": {
       "name": "@jsr/ca-ts__algo",
-      "version": "0.2.0",
-      "resolved": "https://npm.jsr.io/~/11/@jsr/ca-ts__algo/0.2.0.tgz",
-      "integrity": "sha512-dJdq4IATSpQiq8NQJaM0yNT6nGUCPv55N3uGOT+W4BuxxXZEJtr2XrzsdhVVTmB+Ixp9mck/8R0HoRyhKENCdA==",
+      "version": "0.4.0",
+      "resolved": "https://npm.jsr.io/~/11/@jsr/ca-ts__algo/0.4.0.tgz",
+      "integrity": "sha512-OJluqZ3pzrW16PViGIqabDZDdNmZkSnnXOBCqzyn8ndRBAecsaCE1RTq/ocjOhMHstO04BpJUw/OWC0hMunTLw==",
       "dev": true
     },
     "node_modules/@ca-ts/rle": {
@@ -31,6 +32,13 @@
       "integrity": "sha512-i5qMBkWp8xRM2DSMRTFzAR3z1duw6J2aAv84YDpeaQljkNwKbGfawPNeDSy/tLWUCrYhEO/lqIN9kI2CkIXjig==",
       "dev": true
     },
+    "node_modules/@ca-ts/rule": {
+      "name": "@jsr/ca-ts__rule",
+      "version": "0.2.0",
+      "resolved": "https://npm.jsr.io/~/11/@jsr/ca-ts__rule/0.2.0.tgz",
+      "integrity": "sha512-EF4RJx9reZ1KSeDVTegKLEaHsk3rEjAxUSrqHh9acacqdxvHTumhalxNyfYKqFq6DJkZdHxKDniOTICjnQ+lnQ==",
+      "dev": true
+    },
     "node_modules/@esbuild/aix-ppc64": {
       "version": "0.21.5",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",
diff --git a/package.json b/package.json
index 25391d8..a4f27db 100644
--- a/package.json
+++ b/package.json
@@ -19,11 +19,11 @@
     "preview": "vite preview"
   },
   "devDependencies": {
-    "@ca-ts/algo": "npm:@jsr/ca-ts__algo@^0.2.0",
+    "@ca-ts/algo": "npm:@jsr/ca-ts__algo@^0.4.0",
     "@ca-ts/rle": "npm:@jsr/ca-ts__rle@^0.8.0",
+    "@ca-ts/rule": "npm:@jsr/ca-ts__rule@^0.2.0",
     "babylonjs": "^7.29.0",
     "typescript": "^5.6.3",
     "vite": "^5.4.1"
-  },
-  "dependencies": {}
+  }
 }
diff --git a/src/lib/setRLE.ts b/src/lib/setRLE.ts
index c1b3506..767ea4d 100644
--- a/src/lib/setRLE.ts
+++ b/src/lib/setRLE.ts
@@ -1,9 +1,16 @@
 import type { BitWorld } from "@ca-ts/algo/bit";
 import { parseRLE } from "@ca-ts/rle";
+import { parseRule } from "@ca-ts/rule";
 
 export function setRLE(bitWorld: BitWorld, sourceRLE: string) {
   const data = parseRLE(sourceRLE);
 
+  try {
+    bitWorld.setRule(parseRule(data.ruleString).transition);
+  } catch {
+    bitWorld.setRule({ birth: [3], survive: [2, 3] });
+  }
+
   const width = data.size?.width ?? 0;
   const height = data.size?.height ?? 0;