HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

And when you need many castles, you need many heroes, and besides, what's the point of leveling up only one hero? But when 5-6 heroes go into battle, that's interesting. When you gather an army across the entire map, when you have about 16 heroes, because a Town Portal and a Dimension Door might not appear, but they might appear for the other player, and finally, at the start, they will begin to divide the army and think about how to fight with 50 Golems.