Continuity

"Some transmedia franchises foster an ongoing coherence to a cannon in order to ensure maximum plausibility among all extensions."
Caddell, 2009

Unfortunately, on fun forums dedicated for The Family Guy people complain about certain lacks in the story world, “This is kind of to my point, which is people placing expectations on Family Guy of having a coherent plot and universe” (Nohomers, 2010). Brickrd suggests that the show’s universe is not coherent, thus, not plausible for viewers. It is not a problem of the program only as on web sites dedicated to review games the same voices rose about the franchise game with 3 different plots of 3 characters from The Family Guy, “The game only attempts to tie these storylines together in the loosest way possible, but lack of coherence aside, it's still pretty funny stuff.” (Navarro, 2006). 
  
The same problem exists in the Star Wars Trilogy mentioned in the subchapter about feature films where it was pointed out that the family relations of the show characters are violated. As Long writes, “Special attention must be paid to developing a stage upon which multiple storylines (often in different media types) can unfurl, and every story must maintain the consistency of that world”, what in The Family Guy case do not exist (Long, 2007:48).  

It is even more complicated with all sorts of mobile or games where the family relations are not maintained, locations or events are different to the main narration and not only they have not influence on the main narrative but are irrelevant and not correlated with each other at all. iPhone game Family Guy Time Warped Review presents that lack of consistency,They also encounter historical versions of other Family Guy characters, like Lois as a sultry saloon girl and Quagmire as a deviant Roman emperor named Quagligula” (Podolsky,2010 ). 
That lack of coherency contributes to decrease in plausibility in The Family Guy products’ consumption especially by fans and the story may become incomprehensible for other viewers in the future due to the enhancement of a wide variety of The Family Guy products.