The game was famous for three revolutionary mechanics:

If you have obtained the nobunagasambitionkakushinwithpowerupkit.rar file (usually split into .part1 , .part2 ), here is the preservationist's guide:

With the release of Nobunaga's Ambition: Sphere of Influence (2016) and Awakening (2023), why hunt for a 2005 game in a dusty RAR?