It starts to ramp up shortly after where you are now. Not precipitously but it's noticeable. The first three or so worlds are designed to ease the player in to the game, I think. Of course, you always have the option of putting the difficulty level up but unless you are uber fit already you will probably naturally want to do that as you go along because you get incrementally fitter. I was on a difficulty level of 1 on my first day and am now at 14 and that's after just over two weeks of playing 20 mins per day (not including rest days). However, all that being said, I would really not stress about the calories aspect at all if I were you. It is only an estimate and from all accounts is very much on the low side. All consumer devices that give readings for calories burnt are inevitably estimating so none of them should be taken as gospel but a general guide. RFA seems to only give credit for the actual exercise time and not for the calories burnt from increased heart rate in between the actual exertion from exercising. I don't even look at the calories aspect in RFA tbh. I have lost some weight and feel so much fitter so I must have burnt more calories than I was eating but I have not monitored them at all. Sorry, you can only do it twice a week but am glad that you're having fun 🐱.
