diff --git a/projects/oboy/index.md b/projects/oboy/index.md
index fd867a9..1fc6a34 100644
--- a/projects/oboy/index.md
+++ b/projects/oboy/index.md
@@ -13,6 +13,7 @@ It is also an experiment of writing a low-level program in functional language.
 + [PanDocs (self-hosted copy)](pandocs.html)
 + [GameBoy Emulation in JavaScript](http://imrannazar.com/GameBoy-Emulation-in-JavaScript:-The-CPU)
 + [Opcode Map for the Gameboy-Z80](http://imrannazar.com/GameBoy-Z80-Opcode-Map)
++ [codeslinger.co.uk](http://www.codeslinger.co.uk/pages/projects/gameboy.html)
 
 ## Acknowledgements
 + Pan/ATX, nocash et al for the PanDocs