The task was to create a game based upon the original asteroids game. It could have been an authentic remake, or a complete reworking, but the basic concepts of the original needed to be intact - for example, the fragmentation of the asteroids into smaller pieces, and the 'rotate and thrust' control system that are such an important elements to that a game and so they would all need to still be present for the game to be classed as an Asteroids remake.