A pursuit differential game of many pursuers and one evader in a nonempty closed convex compact hyperspace is studied. Pursuit is completed when at least one pursuer coincides with the evader. Control functions of players are constrained by geometric constraints. A pursuit game in a set containing a closed convex compact set is solved, and pursuit is shown to be completed in a pursuit game within a finite-dimensional cube. Parallel strategy and fictitious pursuers are used to solve the game, and a guaranteed pursuit time is obtained.