I can't think of a game that has attempted to express a point with its ending that has done a good job of doing so. A game is a complete entity, and the ending is just a small part of it. If the point is only at the end, it tends to lead to twists or moments that thematically don't work with the rest of the game. I think games do a much better job at getting a point across when it is a greater focus of the game in its entirety.

As to your video: An error occurred, please try again later. Are you sure you used the correct video code? Aha. You also need to cut out the "v=" bit. Just the code at the end.

Video