Pros
Coming from a traditional background (banking), I was not completely sure that the videogame industry would be a viable career. I could not be more wrong. It is a perfect place! Will you have the opportunity to work on something you're super passionate about... And this changes the way you see your work. The culture is not only a banner on the wall... It is really part of everyday's decision: hiring, investment, changes etc. It is a very open and transparent culture. You, as a gamer, will be working with other gamers to deliver amazing stuff for gamers. If you love this industry, that's the right place for you. Riot provides all the resources that you might need in your projects and trust for you to learn along the way.
Cons
Everyone has an opinion for everything and discussions can last for a long time if the direction is not clear. However, when the direction is determined, the delivery power is immense.