For games, I usually use the calorie count the game itself shows (IF it knows my weight, etc., not if it thinks all users are the same ;) ).
If not, I use whatever exercise seems similar to what I did (and also how I felt during/after!) from the Spark list.
I think most (accurate) calorie counts are based on the calories burned above and beyond what you would have burned during that time doing normal/restful activity. Hence, the number is not ALL that you burned during that time period, just what you burned by exercising instead of sitting.
UFC Fitness looks tough!
| Body Fat %: 28.0