Exercise with ddr

ok, yesterday, I got a Dance Dance Revolution game to exercise w. my question is, how much weight and how many calories can I lose for playing it for 2hrs. everyday for like 3 months straight?

Well every DDR game comes with its personal exercise mode and supposly it counts calories and miles you it runs, steps, ect. I dont know how acurate it really is, but its pretty good I use it a lot. I usually do 1,000 Calories heavy mode only ( yeah it also depends on which mode you do). Light mode for 2 hours I guess its ok and if you have the time. It really gets your heart rate up and sweating! Real nice cardio work out.