Microsoft's free game program for Xbox Live Gold continues to roll on this month with yet another classic added to the pile – the epic Bungie sequel Halo 3.

Released back in 2007, this sequel did wonders for the Xbox 360 hardware, introducing players to a bold new part of the Halo universe with a fun single player campaign and a bounty of multiplayer options, which some people still take part of today, despite the newer Halo games that have made their way to market since then.

Halo 3 has since gone on to become a huge best seller for Microsoft, clearing 11.5 million copies since its release. So, if you somehow missed out on it or are feeling nostalgic, you can re-download the game here free of charge.