https://youtu.be/Ly69catDsU4
This trailer in particular is one of my absolute favorites. The game has such great story telling.
Rise of the Tomb Raider
https://youtu.be/mYjRxJpBzwg
I really loved the latest two Tomb Raiders and I wasn't really a Tomb Raider fan before. This trailer gives some of the feeling you get playing the game. It blends cinematics with gameplay so well.
Battleblock Theater
https://youtu.be/pv1ZoHt6poI
This trailer is just hilarious. I bought the game because of how funny the trailers were. Plus, who didn't love Castle Crashers?
Transistor
https://youtu.be/GTik6sYT_BE
This game is worth playing even if you don't like the game element. That's how well the story telling is done. I fell in love with Red because she has such a sad story but keeps going forward and they don't give her a voice or personality and still manage to let you understand her feelings. Plus the music. Of course the music.
For Honor
https://youtu.be/g6GGoTxvGzk
I really enjoyed how they built up the story in this trailer. Then the final reveal showing the main villain is a woman and not some seductress, but an actual badass was refreshing. Sploosh
No Time to Explain
https://youtu.be/J2J30Bz9Pzo
This is one of those games like Battleblock Theater that goes on sale for like a dollar sometimes. It's so worth it for the humor throughout the whole game and you can see it in the trailer. I bought this one instantly after seeing the trailer and having never heard of it before stumbling upon the trailer.
Battlefield 1
https://youtu.be/F0_2u7eSe44
I'm sure most of us are familiar with this one since it's so recent and made a big impact. Still, I didn't think I could make a list of my favorite trailers and not have this one on here. Whoever made this trailer for them nailed the hype train dead on.
Dishonored
https://youtu.be/886xrNCjl7c
When this trailer came out Bethesda got more requests for the song than the game at first. I threw it in because if you haven't heard it before it's worth a listen.
Halo 3: ODST
https://youtu.be/PRhg1_BWHwM
I really liked this trailer because it made the Halo world seem more real and I felt like it was well done. It gave you the right kind of hype and excitement about the game even if the game didn't live up to it as much.
Far Cry 3
https://youtu.be/7n_1zsCVBxw
The definition of insanity. This is actually gameplay but it was released at the reveal of the game and was circulating more than anything at the time so this truly emerged more as a trailer than just gameplay footage. Vaas, in my opinion, was one of the absolute best villains ever created. The game was good, the character was great, but they didn't really fully deliver. They could have done so much more with this character. Vaas was what sold copies of this game.