The regulation seems to apply to films and games distributed online (regardless of subject matter), as well as to publications containing certain loosely-described forms of sex, violence and hate speech:
5.1.1 Any person who intends to distribute any film, game, or certain publication in the Republic of South Africa shall first comply with section 18(1) of the Act by applying, in the prescribed manner, for registration as film or game and publications distributor.
5.1.2 In the event that such film, game or publication is in a digital form or format intended for distribution online using the internet or other mobile platforms, the distributor may bring an application to the Board for the conclusion of an online distribution agreement, in terms of which the distributor, upon payment of the fee prescribed from time to time by the Minister of DOC [Department of Communication] as the Executive Authority, may classify its online content on behalf of the Board, using the Board's classification Guidelines...
