Talk:Fireflies/@comment-22204614-20140724080635/@comment-24149860-20140724184539

Adriano, based on how many double days we get, e.g. 11 you don't really need to spend a whole lot of gems, check the spreadsheet I linked for details, even if you dont have obstacles, i.e. 180 daily.

180 ff daily, +11 days of double ffs -> need to spend 105 gems on double earning days to earn 210 fireflies and that's enough to get to 5500 total.

if it's only 7 double earning days the number of gems goes up but still manageable, 280 (40*7) =  560 ffs then you need to spend an extra 210 gems for a total of 770 ffs needed to get to 5500 for all prizes, based on 7 double earning days... again all very transparent if you check the sheet ;)