Ahh, nice opportunities there. I just started playing this game two days back. Bought a few packs. Reached level 8 now.
I am doing 25 mins mission, with music playing in the background.
The only thing that bugs me is energy drains too fast. Not enough energy to do more missions, and booster cards are a bit costly in comparison to what they offer😅
Lol it's quite opposite for me. I have too many pizza slices with me and I don't have energy problems at all. I actually have to find way to effectively use my energy.