Quote from dhavalmistry on June 1, 2011, 7:45 am

How do I create interaction or splashes in water? In other words use particle system. I tried using info_particle_system but when I try to specify which particle system to use, particle browser opens and it cant find any particle systems. I also tried this page but doesnt seem to be working with Portal 2

http://developer.valvesoftware.com/wiki/Particle_system