https://www.gog.com/game/heroes_of_might_and_magic_5_bundle
Actually, general consensus is that HOMM3 is the best of the Heroes of Might and Magic games:
https://www.gog.com/game/heroes_of_might_and_magic_3_complet...
Even though HOMM3 is from the 20th century, there are still fan made expansions updating the game here in the 2020s, e.g. https://h3hota.com/