Official stores for every game in the series, one page per game:

• Heroes of Might and Magic (1995)
• Heroes of Might and Magic II
• Heroes of Might and Magic III, Horn of the Abyss, HD Edition
• Heroes of Might and Magic IV
• Heroes of Might and Magic V
• Might & Magic Heroes VI
• Might & Magic Heroes VII
• Heroes of Might and Magic: Olden Era
• Might and Magic I–X and Dark Messiah
• King's Bounty series

Bundles and other games

• GOG — Heroes of Might & Magic Bundle — Heroes I–V and Heroes Chronicles, DRM-free
• Steam — Might & Magic: Clash of Heroes - Definitive Edition

HeroesWorld is a non-commercial fan site: these are the official store pages, and we get nothing from the links. Prices, languages and availability depend on your region.