diff --git a/init.example.el b/init.example.el
index d796af67b..86187556b 100644
--- a/init.example.el
+++ b/init.example.el
@@ -129,6 +129,7 @@
        (sh +fish)        ; she sells (ba|z|fi)sh shells on the C xor
        ;;solidity          ; do you need a blockchain? No.
        ;;swift             ; who asked for emoji variables?
+       ;;terra             ; Earth and Moon in alignment for performance.
        ;;web               ; the tubes
        ;;vala              ; GObjective-C
 
diff --git a/modules/lang/terra/autoload.el b/modules/lang/terra/autoload.el
new file mode 100644
index 000000000..0920c3e08
--- /dev/null
+++ b/modules/lang/terra/autoload.el
@@ -0,0 +1,8 @@
+;;; lang/terra/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +terra/open-repl ()
+  "Open Terra REPL."
+  (interactive)
+  (terra-start-process "terra" "terra")
+  (pop-to-buffer terra-process-buffer))
diff --git a/modules/lang/terra/config.el b/modules/lang/terra/config.el
new file mode 100644
index 000000000..27515edb6
--- /dev/null
+++ b/modules/lang/terra/config.el
@@ -0,0 +1,12 @@
+;;; lang/lua/config.el -*- lexical-binding: t; -*-
+
+;;
+;; Major modes
+
+(def-package! terra-mode
+  :defer t
+  :config
+  (set-lookup-handlers! 'terra-mode :documentation 'terra-search-documentation)
+  (set-electric! 'terra-mode :words '("else" "end"))
+  (set-repl-handler! 'terra-mode #'+terra/open-repl)
+  (set-company-backend! 'terra-mode '(company-lua company-yasnippet)))
diff --git a/modules/lang/terra/packages.el b/modules/lang/terra/packages.el
new file mode 100644
index 000000000..90115f396
--- /dev/null
+++ b/modules/lang/terra/packages.el
@@ -0,0 +1,8 @@
+;; -*- no-byte-compile: t; -*-
+;;; lang/lua/packages.el
+
+(package! terra-mode :recipe (:fetcher github :repo "StanfordLegion/terra-mode"))
+
+(when (featurep! :completion company)
+  (package! company-lua))
+