While getting my books signed I asked Brandon how many books he had written before Elantris and he said seven, not all of which were epic fantasy. He also said that that number had risen to thirteen books by the time Elantris was published, making Mistborn the fourteenth book he had written.
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.