http://tf2maps.net/threads/help-with-custom-particles.27172/ I see this problem exists. I'll just show all I can and hope for the best. I made a test particle, and used the japan packs particle to further test. this is what the game says. Attempting to create unknown particle system 'sakura_512' Attempting to create unknown particle system 'w' Maps name: ptestg.bsp ,is in maps folder. Manifest.txt is named: ptestg_manifest.txt, is also in maps folder. In the manifest file: particles_manifest { "file""!particles/tstpigpig.pcf" "file""!particles/env_sakura01.pcf" } Particles. *xdxd look he named it pigpig, what a self centered tard. In the particle editor: In hammer: I hope that's enough. This has been pissing me off for the last EVER xd like anyone will reply.