Before revision: This paper proposes a multiscale method for solving the numerical solution of mean field games  . Starting from an approximate solution at the coarsest level, the method constructs approximations on successively finer grids via alternating sweeping  .
After revision: This paper proposes a multiscale method for solving the numerical solution of mean field games . Starting from an approximate solution at the coarsest level, the method constructs approximations on successively finer grids via alternating sweeping , which not only allows for the use of classical time marching numerical schemes but also enables applications to both local and nonlocal problems .