Halo: Nightfall is the most ambitious attempt at live-action Halo so far. The format is similar to 2012s Halo 4: Forward Unto Dawn. This web series fits in a specific place in Halo continuity and seeks to flesh out the exploits of a character who will play a supporting role in an upcoming game (in this case, Halo 5s Agent Locke). The difference with Nightfall is the that budget is bigger, and with it the scope and length of the series have increased. Things behind the scenes are bigger as well.