Board Thread:Game Discussion/@comment-5573466-20130505204212/@comment-8284783-20130508182735

That would explain why my app stopped working during a battle, all of a sudden... Had I know, I probably would've kept a couple more battle cubes ready, but oh well... I'm still at work and have limited access to a device I can play on anyway. I'm also more confident that I'll get a good ranking this time since I'll get to start right away and I already have a decent team (compared to last event where there was only 72 hours left when I started and I was starting from scratch).

Btw, for those interested in upgrading your cards, I added the "normal" sell price of most R2s and all R3s I had access to. That way you can sort the list by sell price and see which cards will give the most exp to your characters when you upgrade them :D

(and also determine which ones are too crappy and should be just sold for money instead)