Multinomial Logistic Regression


I have a dataset containing obversations in the video game market, e.g. Video Game Name, Publisher, Game Platform, User Ratings, etc. I want to research the effect the publishment of a very successful game has on the development/publishment of other games, e.g. do other developers try to copy it or do they change the genre to avoid competition with it? I think I need to put genre as the dependent variable, but I am really not sure how to build the model. Could you please give me some input on how to get started? I will be using the software Stata for my analysis.

I really appreciate any comments!