70 demos are playable right now.
A collection of 70 demos for in-development games has been dumped on the Xbox store and they are yours for the taking, at least for the next week. The Xbox Summer Game Fest event has gone live as of yesterday (July 21) and is running for the next week providing free access to slices of life for games you might want to play over the next couple of years.
There are more demos here than most people will be able to get through before the 27, but they are worth checking out. For an entire list of the titles, check out the link below. The list includes Destroy All Humans, Haven, Raji, Hellpoint, and many others including 15 that are just being announced this week.
Source: Xbox
MMO Fallout 