Sacred Haven of Debauchery

Sanya, you know your way around SpellForce. So here's the thing, there's SpellForce 3 Soul Harvest and SpellForce 3 Fallen God, and then there's SpellForce 3 Reforced, which reworks some mechanics from the first two, but it's unclear whether they share the same campaigns or they're different. They're sold separately. In the end, it's unclear whether it's one game or different ones..