With the launch of any of the 5 Heroes games (original, expansions, unofficial expansions).

Unfortunately, yes, it's a pirated copy!
They were bought, but I think NeoGame is the official distributor.
Anyway, there are no protections or anything! But the fact that it worked on SP2 and doesn't work on SP3...

I got a licensed version of Tribes of the East, and it's the same story!