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The game's philosophy... well, that's a grand statement. Rather, the game was created for turn-based battles, where the combination of army composition and skills equals the tool for victory. The division of factions is quite relative, although I should note that in the third Heroes game, there wasn't much balance, and the dominant factions always remained at the top, while the weakest were the Fortress (due to its unspecialized army and lack of magic) and the Swamp (weak army and weak magic). The strongest were the Tower (which, with its army and magic skills, was very powerful on expert difficulty) and the Castle (army + morale (luck, leadership)). The other factions were in the middle. In the fourth Heroes game, balance was also not found; instead, there was a very long progression system, and it took a very long time to develop your castle. The most balanced game is Heroes 5; anyone who plays it for a sufficient amount of time will immediately notice that the army and skills for all factions are aligned with specific builds. And the balance between army and magic is equal. What's missing are just good maps... Heroes 5, forward!