Most secret chems shouldn't be secret.

[Vitatroll]

Also if you think secret chems are secret just to balance them you're wrong.

If that was aimed at me them you're wrong. About what I think, anyways.

NI3 was a completely in-lab chem. No need to leave. No limiter. Quick to make. You smoked it on the floor (near invisible) and it exploded when you stepped on it. Pre-explosion fix it just stunned you a little and made noise (IIRC). Post-explosion fix it blew off all your limbs and sent you straight into crit, and people did this round-after-round. Despite that, it took weeks to remove.

Pre-nerf nitrog was also in-lab and also quick to make. It was also very stable. It practically deleted somebody if you splashed some on them. It was also foamable, which while it was amazing, it also put QGP to shame. Not sure how long it took to nerf, as I took a good break around then.

Those are what I don't want. They were eventually fixed, but it's better to make sure they're remotely balanced (regardless of secrecy) before release. I say this as a no-lifer that figured out (or sleuthed) all the recipes pre-leak.