> It's just that using a 'secure' algorithm is often overkill for a game when you don't really need those extra guarantees.
It's not overkill here, because this is a turn-based game. The additional cost of using high-quality randomness instead of World's Worst "Randomness" will never even be noticed; I would have expected a CSPRNG to be the default approach.
That said, it is true that while the C# standard library provides a CSPRNG alongside its terrible PRNG, it won't let you seed the CSPRNG. So even if you know what the right thing to do is, Microsoft doesn't want you to do it.
