Thats not true though, that would only be accurate if every time Launchbox was rolling a number it was on the same game, but of course it isnt its always rolling a number from a different game (excluding the first roll of course). So it is actually more common than you would think to hit the same game. If you had 1000 games in a platform and on the first roll Launchbox picked 300, you would of course see a different game, but then if the next roll it chose 700 as the number, then you would be back at the same game 300 + 700 = 1000, in that case it still chose two completely random numbers, but because the starting point is different the chance of hitting the same game is higher, If the roll was always starting from zero i could see your point but its choosing a random number roll from a previously random roll position so the chances of hitting a already seen game is actually statistically higher than if every roll started out from a zero position.
Im not saying that there isnt potentially something wrong here, just that the very nature of something being random, and started from random points is always going to look somewhat not random as you will hit the same outcomes.