The closed alpha for Marathon is soon due to roll out to players who signed up, meaning Bungie's colourful futuristic servers are warming up. Sadly, we weren't invited - the alpha is only open to North Americans. But, aha, something went awry today and the game became available to play early for those on Xbox. And one quick-witted player streamed a full hour of the game before the servers clamped shut once again.
A streamer played an hour of Marathon early before Bungie cut him off
