Farming and Drop Rate Calculations (Spreadsheet)

The sheet

Now you know exactly how "unlucky" you actually are with your drops. The basic numbers are that if you're farming for a specific epic it takes 42 tries to be favored to get at least one, and you can expect 60 tries between drops.

I've seen a lot of people both on this subreddit and on the Kongregate forums say that you should only farm islands 1 - 5. Well that's not true and you're wasting time/energy if there's a more expensive island that has more drops that you want (assuming you can beat it almost always).

e.g. You want Alamo Beers and Rifles. You could farm 5-1 for the Rifles and hope you get them. Or you could farm both at the same time in 10-1, and get more drops faster.