What is your favorite Xbox timed exclusive?

It's very hard to choose just one, my initial first thought was Left 4 Dead 1&2. I also thought about Castle Crashers and Alan Wake.

But after putting more thought into it and looking at lists of Xbox Timed Exclusives.

My answer has to be BioShock. But Left 4 Dead 1/2 isn't super far behind it.

I could sit here and write a whole novel about how BioShock is a masterpiece and that if you haven't played it, you should. But let's not do that. I don't wanna have to write a TL:DR.

I will say though, BioShock being a timed exclusive on the Xbox 360 was hands down one of the best timed exclusives that Xbox could've ever had. The game isn't just one of my favourite Xbox exclusives but one of my favourite games of all time.