I know I can make a new projectile. The fireballs you see above ARE due to new projectiles.

Thing is, the textures they refer to are not referenced within the projectile file. All they refer to in terms of explosions are the following lines:

Code:
effect 			fiery_boulder_set
end_effect		fiery_boulder_explosion_set
fiery
??? And I'm stuck from here. Which files define these three things?