The mould will grow side to side and up and down, so it changes shape, and for a whiles the spores are a gas which delivers the mould everywhere and that generates about 0.1 pressure that spreads the dust spore everywhere. Well, the spore gas idea is important but you could just leave the mould as a powder.

New Idea:
LPG-Liquid-Petroleum Gas. It is high explosive and can be used in fuel-air bombs.

I just found it in a thread. Maybe you could have LPG (Gas) and LP (Liquid) which forms from LPG under pressure.

PG-Petroleum Gas Highly explosive, used in fuel-air bombs. Sounds good! You always know what to do! =)
Also, can you add ACGS (Acid Gas): https://powdertoy.co.uk/Discussions/Thread/View.html?Thread=3540

where's the link for latest version?
1_ok i found it

@PizzaPlatypus (View Post)
you can use my code for acid gas, if it works...