He was heavily involved in the development of The Sims 1, you know since it was his idea and game. During the Sims 2 development he was mainly working on Spore, overlooking the Sims 2 team and giving advice but didn't develop or direct the development of the game. There were massive issues with the development of Spore and with EA wanting to market it in a way that didn't follow Wright's ideas and he was really upset over it.
He started working on new projects on his own around 2008 and left not only Maxis but EA and the mainstream industry as a whole. He never worked on any other EA project again after this and he has gone underground since then.
He is now working on a small project called "proxi".
He has absolutely no input in the game since he left the company and was not involved at all in either The Sims 3 or The Sims 4, which is sad because they are techically his games and Maxis was his company along with another colleague.
