Better seeds than time(0)?

Question

I understand that time(0) is commonly using for seeding random number generators and that it only becomes a problem when the program is being run more than once per second.

Answer 1

The method with random number generators is to only seed it once so your example of an online game is not a problem as, potentially, the same rng will be used for each value which would have been seeded when the program was first started (perhaps several years ago).

Similarly in your own code try to seed the rng once and then use the same instance where ever required rather than creating a new rng with a new seed all over the place.