No overpowered elements: by the time you max out advanced wisdom, expert earth magic, and find spells, these things will stop affecting the player's development, but will save time. But in the sixth part, it really simplifies development.
By the time you can easily rebuild already built cities, these things will stop affecting the player's development...
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But no, no, no! Hands off the third game! It's certainly overpowered, but we shouldn't forget where we all came from, and if we believe the aphorism, where we will return to =)