This mod adds the following incendiary options to satisfy your pyromaniac urges:

Existing explosive rockets, explosive shells, and explosive uranium shells now cause fires in the area of effect;

Incendiary rounds and incendiary shotgun shells that deal more or less the same damage as the piercing variants, but the damage is partially of "fire" type and the target is also set on fire. Unlocked by "Incendiary ammo" technology;

Molotov cocktails: grenade-like throwables that splash on impact (similar to cluster grenades) and set things on fire. Unlocked by "Napalm" technology;

Fire traps: landmine-like objects that look like brown puddles and upon triggering set things around them on fire. Unlocked by "Napalm" technology. Beware the likely construction robot casualties;

Additionally, Molotovs and fire traps cause special kind of "napalm" flames, they burn hotter and longer.