Do you remember "wolf, wolf, hoe laat is dit?!" ?
Its like playing jagertjie with a group of children, one in the group plays the wolf, then the others sing and ask : wolf wolf, what is the time? then the wolf can say 8o'clock....then the children can repeat the question over and over until the wolf say: "Etens tyd!" and chases every one and the child to be caught for "lunch" is the next one to play the wolf. very exciting cause you never now when the wolf decides to go hunting!
Have fun, trying to think of other games. Cant remember Bok-Bok or Swartvark anymore...will let you know.
oh, and you can use "lantern bekruip" at the camp, do you know it? Or even "bokdrol spoeg" for fun with sweets. "Sak resies", Eier hardkloop (were you try and run with an egg on a spoon in a race), Twee-been resies (were two kids inner legs a tied together and they have to race other teams) and Onder-handjie-klap. What about Vroteier?
I also though about "kat en muis" en "knopie".Knopie is where a circle of kids take hands and without letting go, tie the circle in a knot by criscrossing the oposites of the sircle...once in a "knoop"..they have to plan and wurm a way to untangle the knot until they are back in a circle facing eachother.
Hoe klink ek sien met my kleine kleine ogies? but I-spy is a international game too right? How about musical shairs?
You can perhaps also tell legendary south-African stories with a picture board, stories like that of Wolraad Woltemade, Harry Woluter, Rageltjie De Beer, Jock of the Bushveld etc. Just for fun.
It could also be nice to use something like "Olke bolke....." to place the kids into teams if the game you play has teams. How about a sport like jukskei..that very South-African.
sorry I dont know any traditional Black south-african games that children play, I'm giving ideas from a white afrikaans background. Hope you find what you are looking for...