diff --git a/contrib/x11/examples/cube.factor b/contrib/x11/examples/cube.factor
new file mode 100644
index 0000000000..e0dc742853
--- /dev/null
+++ b/contrib/x11/examples/cube.factor
@@ -0,0 +1,63 @@
+USING: kernel sequences namespaces math threads io opengl concurrency
+x xlib x11 gl concurrent-widgets ;
+
+SYMBOL: pval
+
+:  p pval get ;
+: -p pval get neg ;
+
+: wire-cube ( size -- )
+2.0 / pval set
+GL_LINE_LOOP glBegin
+-p -p -p glVertex3f
+ p -p -p glVertex3f
+ p  p -p glVertex3f
+-p  p -p glVertex3f
+glEnd
+GL_LINE_LOOP glBegin
+-p -p  p glVertex3f
+ p -p  p glVertex3f
+ p  p  p glVertex3f
+-p  p  p glVertex3f
+glEnd
+GL_LINES glBegin
+-p -p -p glVertex3f
+-p -p  p glVertex3f
+ p -p -p glVertex3f
+ p -p  p glVertex3f
+-p  p -p glVertex3f
+-p  p  p glVertex3f
+ p  p -p glVertex3f
+ p  p  p glVertex3f
+glEnd ;
+
+: init ( -- ) 0.0 0.0 0.0 0.0 glClearColor GL_FLAT glShadeModel ;
+
+: display ( -- )
+GL_COLOR_BUFFER_BIT glClear
+1.0 1.0 1.0 glColor3f
+glLoadIdentity
+0.0 0.0 5.0 0.0 0.0 0.0 0.0 1.0 0.0 gluLookAt
+1.0 2.0 1.0 glScalef
+1.0 wire-cube
+glFlush ;
+
+: reshape ( { width height } -- )
+>r 0 0 r> [ ] each glViewport
+GL_PROJECTION glMatrixMode
+glLoadIdentity
+-1.0 1.0 -1.0 1.0 1.5 20.0 glFrustum
+GL_MODELVIEW glMatrixMode
+display ;
+
+f initialize-x
+
+create-pwindow
+[ drop reshape ] over set-pwindow-resize-action
+window-id win set
+StructureNotifyMask select-input
+{ 500 500 } resize-window { 100 100 } move-window map-window
+
+[ GLX_RGBA ] choose-visual create-context make-current
+
+init [ concurrent-event-loop ] spawn display
\ No newline at end of file