Have the game capture the gameplay in such a way that it can be later viewed from any angle. Also: Asteroid view - "picks the largest first fragment with the view point on top of the asteroid and looking at the ship ... when that asteroid is destroyed a new one is picked" Add the ability for the user to have multiple camera angles and to be able to switch between them in a nice 'editor' Allow the user to use silly cinematic effects or 'filters' or whatever to change particular parts of the replay as rendered When rendering out to a file, allow for all sorts of quality, format and resolution settings. Allow rendering with or without a preview of the end result file. Allow selection of particular music for the background, perhaps even music from outside the game, unless there's some weird copyright concern there.
Issue #329 duplicate