Invested some hours into this explo fire and smoke effect. The spawn flamer function is really cool
_spawn_flame (vector, flame_amount, burntime, Sound);
Pretty handy function

PEB - tool used for the low level particle scripts. Also u see the first attempt of a Zombie coming out of the floor ( grave, canal whatever ):
https://youtu.be/fiJEz2Llh_A
edit: For those intrested in simple explosions...theres a nice contribution around here somewhere ( if i remember right i took some parts from it

).
Greets