He is a lone dev. He released 3 versions within the first year of it's release, all of them being just the prologue, which is a very good prologue all in all, but we are now getting this winter special almost 2 and a half years later, after promises of a full Chapter 1, which even in the opening portion of this special he mentions only part of it will be released. If I was a cow, my teets would be hurting... thankfully, I'm not.