diff --git a/langs/cat.yaml b/langs/cat.yaml
index 2fad37d..a3446a0 100644
--- a/langs/cat.yaml
+++ b/langs/cat.yaml
@@ -26,7 +26,7 @@ install:
 
       const args = process.argv.slice(2);
       if (args.length > 1) {
-        console.error("usage: repl.js [FILE]");
+        console.error("usage: cat-lang [FILE]");
         process.exit(1);
       }
 
diff --git a/langs/yoptascript.yaml b/langs/yoptascript.yaml
new file mode 100644
index 0000000..c9a0cc9
--- /dev/null
+++ b/langs/yoptascript.yaml
@@ -0,0 +1,63 @@
+id: "yoptascript"
+aliases:
+  - "yopta"
+name: "YoptaScript"
+
+info:
+  year: 2016
+  desc: "The world's first scripting programming language for gopniks and real boys"
+  ext: yopta
+  web:
+    home: "https://yopta.space/"
+    source: "https://github.com/samgozman/YoptaScript"
+  category: general
+  mode: interpreted
+  platform: nodejs
+  syntax: c
+  typing: dynamic
+  paradigm:
+    - functional
+    - imperative
+    - oo
+  usage: []
+
+install:
+  npm:
+    - yopta
+  scripts:
+    yopta: |
+      #!/usr/bin/env -S NODE_PATH=/opt/yopta/lib/node_modules node
+      const fs = require("fs");
+      const repl = require("repl");
+
+      const args = process.argv.slice(2);
+      if (args.length > 1) {
+        console.error("usage: yopta [FILE]");
+        process.exit(1);
+      }
+
+      const program = args.length === 1 ? fs.readFileSync(args[0], "utf-8") : null;
+
+      require("yopta");
+
+      if (program !== null) {
+        eval(yopta(program));
+      }
+
+      repl.start({prompt: yopta> ", eval: (cmd, context, filename, callback) => callback(null, eval(yopta(cmd)))});
+
+repl: |
+  yopta
+
+main: "main.yopta"
+template: |
+  красноглазое.чмо("Привет мир!") нах
+hello: |
+  Привет мир!
+
+run: |
+  yopta main.yopta
+
+scope:
+  code: |
+    x = 123 * 234