diff --git a/.gitignore b/.gitignore
index b65e425..29733bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .dub
 .bin
+dub.selections.json
 
 *.swp
diff --git a/.gitmodules b/.gitmodules
index 29d7e1f..e4de406 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "thirdparty/dast"]
 	path = thirdparty/dast
 	url = https://gogs.enigmatical.work/kajironagi/dast.git
+[submodule "thirdparty/gl4d"]
+	path = thirdparty/gl4d
+	url = https://gogs.enigmatical.work/kajironagi/gl4d.git
diff --git a/sjplayer/dub.json b/sjplayer/dub.json
new file mode 100644
index 0000000..5a24f13
--- /dev/null
+++ b/sjplayer/dub.json
@@ -0,0 +1,9 @@
+{
+  "name": "sjplayer",
+
+  "targetPath": ".bin",
+
+  "dependencies": {
+    "gl4d": {"path": "../thirdparty/gl4d"}
+  }
+}
diff --git a/sjplayer/test.d b/sjplayer/test.d
new file mode 100755
index 0000000..b0ff3bc
--- /dev/null
+++ b/sjplayer/test.d
@@ -0,0 +1,47 @@
+#!/usr/bin/env dub
+/+ dub.json:
+{
+  "name": "sjplayer",
+  "dependencies": {
+    "sjscript": {"path": "../sjscript"},
+    "derelict-sfml2": "~>4.0.0-beta.2"
+  },
+  "lflags-posix":   ["-L../thirdparty/dsfml/lib"],
+  "lflags-windows": ["/LIBPATH:..\\thirdparty\\dsfml\\lib\\"]
+} +/
+
+import std;
+
+import derelict.sfml2.audio,
+       derelict.sfml2.system,
+       derelict.sfml2.window;
+
+int main(string[] args) {
+  DerelictSFML2System.load();
+  DerelictSFML2Window.load();
+  DerelictSFML2Audio.load();
+
+  sfContextSettings specs;
+  specs.depthBits         = 32;
+  specs.stencilBits       = 32;
+  specs.antialiasingLevel = 1;
+  specs.majorVersion      = 3;
+  specs.minorVersion      = 3;
+
+  auto win = sfWindow_create(
+      sfVideoMode(600, 600), "sjplayer".toStringz, sfDefaultStyle, &specs);
+  scope(exit) sfWindow_destroy(win);
+
+  sfWindow_setActive(win, true);
+
+  auto running = true;
+  while (running) {
+    sfEvent e;
+    sfWindow_pollEvent(win, &e);
+
+    running = e.type != sfEvtClosed;
+
+    sfWindow_display(win);
+  }
+  return 0;
+}
diff --git a/thirdparty/gl4d b/thirdparty/gl4d
new file mode 160000
index 0000000..51ad927
--- /dev/null
+++ b/thirdparty/gl4d
@@ -0,0 +1 @@
+Subproject commit 51ad9270d58fd7cd64b494450dd447b39b21bb45