Game's underlying implication and race

Persuasive games and the concept of 'procedural rhetoric' was so hard to understand. While being in the lecture room yesterday, I thought 'Wow....Videogames..so many theories.. there are so many things to learn!' Honestly I was so lost.. couldn't get the grip on this concept.

Then today's tutorial was a great help in some sense. We talked about GTA: San Andreas and how the game depicts 'socio-economic representation' through fast-food/salad binary and a black protagonist in the game. Moreover through such example I understood the concept as a game having an 'underlying implication that persuades or convinces the gamer.'

Though I was quiet uncertain how the concept operates. Subsequently one of my classroom colleague asked 'Then does it mean that a game is to underlie a some sense of ideological (in a broader sense) meaning in order be persuasive? or enable the player's engagement with procedural rhetoric?' I also asked 'Does a game necessarily need to have a narrative for it to convey its underlying implication?'

Mark (our tutor), being aware that I am a huge soccer game fan, thankfully provided examples of my favourite game genre to make my understanding much easier. He said for example one of the earliest FIFA soccer game series had around 5 'white' players' facial templates' while in contrast only contained 1 'black' soccer player's facial templates- which the game may have had underlying implication of 'racial minorities' perhaps because 'blacks look all the same?'(no offence)

That's my understanding of persuasive games. I think that 'race' possess a prodigious sector in the games' underlying implications. On the other hand please do correct me if my understandings are wrong. Please,.. so then I can get the thing right with you guys' help.