Can't be bothered to drag yourself to the nearest brick-and-mortar to pick up your Xbox 360 games? Don't worry, you won't be penalized for your sloth -- this coming Tuesday, the first batch of 21 titles will be added to the Games on Demand service, a new feature in the anticipated dashboard update. There are no costs attached to these titles yet, but Microsoft says they'll be similar in price to their tangible counterparts.
We've got the full list of games posted after the break -- highlights include Mass Effect, Assassin's Creed, Elder Scrolls IV: Oblivion, and ... Viva Piñata. What? We love ambulatory piñatas! Deal with it.
Update: Turns out the initial list we got our hands on was for the European territories. We thought it was weird Bioshock wasn't on there! We've got the full list of 24 (!) games coming to the States posted after the jump.