This paper examines the evolution of unplanned coordination among independent agents in a market selection game, which is a non-cooperative repeated game with many agents (e.g., 100 agents) and several markets (e.g., five markets). Every agent is supposed to simultaneously choose a single market for maximizing its own payoff obtained by selling its product at the selected market. It is assumed that the market price is determined by a linear decreasing function of the total supply at each market. For example, if many agents choose a particular market, the market price at that market is low. On the contrary, the market price is high if only a small number of agents choose that market. In this manner, the market prices are determined by the actions of all agents. The point of our market selection game is to choose a market with a high market price, i.e., a market that is not chosen by many other agents. In this paper, the evolution of game strategies is performed by localized selection and mutation. A new strategy of an agent is probabilistically selected from its neighbors' strategies by the selection operation or randomly updated by the mutation operation. It is shown that the maximization of each agent's payoff through the genetic operations leads to the unplanned coordination of the market selection where the undesired concentration of agents is avoided. Through computer simulations, the unplanned coordination is compared with the planned global coordination realized by the maximization of the total payoff over all agents. Simulation results show that almost the same average payoff is obtained by these two schemes. That is, the selfish maximization of each agent's payoff through the genetic operations leads to a near-optimal result with respect to the total payoff over all agents. The unplanned coordination of the market selection realized by the evolution is also compared with some simple market selection methods such as a minimum transportation cost strategy, a random selection strategy, and an optimal strategy for the previous actions. Simulation results show that much higher payoff is obtained by the unplanned coordination than those methods.