How do you make custom explosions and projectiles?

[Pi]

I would like to know how to make custom explosions and custom projectiles. I think you make the projectiles with Milkshape (because I have it) but is that also where I make explosions? Please help. Also, emitters and projectile trails.

[Ad Bot]

[Deriboy]

I am pretty sure explosiosn are made using particles.

[Masterlegodude]

Projectiles = Milkshape 3D/Blender
Explosions = Notepad + editing the explosion particles of another weapon