We introduce a new scheme for real-coded lattice gas to the numerical simulation of immiscible multiphase fluids. This scheme is based on a minimization principle. A numerical example demonstrates the spontaneous segregation of N-phase in two dimensions. Numerical studies on the surface tension between two fluids show a good agreement with Laplace's law. The reproduction of Brownian motion for single droplet was verified through Maxwell-Boltzmann distribution of its velocity. A preliminary application illustrates a simulation of many immiscible droplets dispersed in another fluid. (C) 2004 Elsevier Inc. All rights reserved.