The trailer for Resident Evil VII back at that E3 was really impressive.
I like Resident Evil 6, but after the series changing from Survival Horror, to more action-themed, I wasn't expecting RE7 to be a full survival horror game. Plus, the trailer did a very good job at making me anxious for it.
I was already interested for the setting, the graphics and the gameplay, but after seeing "RESIDENT EVIL" at the end of the trailer, I was really caught by surprise. Loved it.