Quoted from Whysnow:
After 3 years and every new Stern in that time I have a bit of data to tell when a game is a dud.
I can give you the example of TWD.
Started out great for a few month and then dropped hard (everyone plays the new game and the drop rate and amount is telling of the F U N factor) A game dropping hard is just not considered fun to play so they would rather play the game next to it or more likely the classics. Then TWD had lyman polish the code and the game slowly grew back in the favor of players. With the great code it now has, it is consistently played.
I started operating in February 2013, so we have a lot in common.
My experience with TWD also 100% matches yours at the beginning. I picked it up from Stern the first day/Wednesday of Expo in October 2014. It did great for a month or so, then fell off the face of the earth. I rotated it a few months later, where earnings were about the same at its new location. I then rotated it back to the original location at about the time the major code revision was released, and it earned great for maybe 6 months. It has been off location since early March, and I'm about to rotate it back to this original location for October/Halloween.
So, code seems to have mattered quite a bit on TWD, but not at all on KISS. Dunno.