At Oculus Connect 2 last year, Epic Games' Bullet Train demo stole the show -- leaning heavily on the "bullet time" effect popularized by the Matrix films to create a smooth, action-packed shooter that let players take down multiple enemies in slow motion. It had a neat gimmick: it used virtual reality to bend reality in a way we've only seen in the movies. The team brought the concept back to Oculus developer conference again this year as the heavily refined Robo Recall: a frantic, physics-based shooter with a sense of humor. Hands-down, it's one of the best Oculus Touch experiences I saw at the show. Even better? When it launches early next year, it will be absolutely free.