Well, if the game state is so small, then it's quite easy to combine all these functions together in FRP style. How about big games though? for example, World

Well, if the game state is so small, then it's quite easy to combine all these functions together in FRP style. How about big games though? for example, World Of Warcraft or Eve Online. The game states of these are humongous, and the game state's data constructor would be huge.