Microsoft hasn't been dallying about bringing some of the top games from the current console generation to its Games on Demand service through Xbox Live. Currently, Xbox 360 gamers can purchase digital copies of such top-rated titles as Assassin's Creed, BioShock, Mass Effect, Burnout Paradise, and The Elder Scrolls IV: Oblivion. That list is poised to grow in October, as Microsoft has announced eight more full retail games that will be offered through its download service.

　　This past Tuesday, Call of Duty 3 and Tom Clancy's Rainbow Six Vegas 2 joined the Games on Demand lineup, both carrying a $29.99 price tag. Next Tuesday, Rockstar Games' top-rated (not to mention top-selling) action adventure Grand Theft Auto IV arrives. Rockstar will return on October 20 with its street racer Midnight Club Los Angeles, as Electronic Arts offers up Army of Two and Sega delivers Sonic Unleashed.

　　Electronic Arts will close the month on October 27 with Dead Space, its well-received survival horror shooter developed by Visceral Games. Dead Space will find company that week in Codemasters' Dirt, an off-road racer formerly titled Colin McRae Rally.

　　Microsoft did not indicate how much the upcoming new additions will cost and had not responded to requests for comment as of press time. However, the current Games on Demand roster ranges in price from $19.99 to $29.99.