diff --git a/languages/obratnaya.toml b/languages/obratnaya.toml
new file mode 100644
index 00000000..bfa4dd00
--- /dev/null
+++ b/languages/obratnaya.toml
@@ -0,0 +1,33 @@
+name = "obratnaya"
+entrypoint = "main.oba"
+extensions = [
+  "stk"
+]
+aptKeys = ["3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"]
+aptRepos = [
+  "deb https://download.mono-project.com/repo/ubuntu stable-bionic main"
+]
+packages = [
+  "mono-complete"
+]
+setup = [
+  "cd /tmp",
+  "wget https://repl.it/@obratnaya/Obratnaya.zip",
+  "unzip Obratnaya.zip \"obrya.exe\" \"lib/*\"",
+  "mv obrya.exe /usr/bin/obrya.exe",
+  "mv lib/* /usr/bin/",
+  "rm -rf Obratnaya.zip"
+]
+
+[run]
+command = [
+  "mono",
+  "/usr/bin/obrya.exe",
+  "main.oba"
+]
+
+[tests]
+
+  [tests.hello]
+  code = ".data:\n    .text hello\n.main:\n    mov 0,@\n    msg @\n    cr\n    lf\n    ret"
+  output = "hello\r\n"