There needs to be a comma after "want" and after the dialogue tag. I'm not sure if the order of the dialogue tag is strictly incorrect, but it does look a little awkward. The order of the "we played" sentence is definitely wrong. I don't see why you would switch over to single quotation marks for a video game title. And ellipses are so overused these days; do you really need that second one?

It should read as follows:

"Hey Tracy, you can do whatever you want," Tomas said to me, "but don't regret it." Then we played "World of Warcraft" all night. Ahh... What a beautiful day.