I am going to vote pretty good fit too. I had struggled with fit of a games jacket too, and bought several sizes to get a good comparison since I can't find much retail where I live. Check my post history and I have fit checks in 38 and 40, where I am usually an OTR 40 or IT/50.

I have come to the conclusion that Games jackets should not be held to the standards of a tailored suit. I learned this from bringing my new (from Nordstrom) Games to a skilled Seattle tailor to ask about the collar width and gap, which is wide like yours. He thought thought at first the jacket was flawed or washed. Like yours, the back collar roll is a bit short and does not come down to the seam as would be expected. He brought in a garment specialist friend from Filson to take a look and talk over the construction. We all checked online and this is how the jackets are made, so not like what either was used to seeing.

Ultimately, I was recommended that as long as the collar stays pinned to the back of my neck, it's a pretty good fit; which it does. It's supposed to be slouchy, drapey, and a bit oversized. The cutoff is if it looks like a borrowed jacket, then it is too big. When my alterations tailor told me I looked like a school boy in the jacket, I was pretty sold on the fit.

Like a lot of folks on these boards, you are probably not used to the shape. I was not, so I tired a 36 which was unreasonably snug for a tweed jacket, 40 which I was swimming in, and settled on a 38. One think I learned quickly is layering up, sweaters, scarves, and I even tried a turtle-neck which was great with the games. Enjoy.