Something old and something comparably new join the Xbox 360 Games on Demand lineup today, with Dead Rising and Halo Wars now available in convenient downloadable form.

I've played my fill of Dead Rising since its 2006 release, so I probably won't be download it for $19.99 via Games on Demand.

Halo Wars, on the other hand, is a game I've had in my hand many times over the past few years, only to put it down before making it to the cash register. Perhaps I'll find pushing a button much easier than handing over my credit card.

Or maybe I'll just sit there at the purchase screen, hemming and hawing over spending $30 on a real-time strategy game based on a first-person shooter series I'm not particularly fond of, until I eventually B button my way out of the purchase. At least I can do it from the comfort of my couch now.

Games on Demand: Halo Wars and DEAD RISING [Major Nelson]