7. General logic of Inferno's development.
All proposed mechanics are interconnected and form a consistent invasion model.
Initial landing. Inferno establishes a foothold on the planet, but its forces are scattered and vulnerable.
Recovery of the landing force. The player seeks out lost Kreegan units and joins them to their forces.
Temptation. Local creatures become an additional source of army.
Concentration of forces. Summoning magic allows gathering scattered units.
Expansion of the invasion. The Grail beacon attracts new landings from other worlds.
Creation of infrastructure. Hell Gates gradually transform into an interworld portal.
Terraforming. Captured territory gradually turns into a full-fledged Inferno beachhead.