The U.S. Marine Corps and joint concepts and thinking increasingly emphasize the role of information in military operations-from maintaining situational awareness to influencing adversary decisionmaking and understanding the behaviors of noncombatant populations. At the same time, wargaming is enjoying renewed prominence in the defense community as a tool to explore potential future conflicts and shape strategy. Yet, the information environment (IE) remains underdeveloped and underrepresented in wargames, both in the Marine Corps and across the U.S. Department of Defense. An examination of requirements, principles from military theory, current doctrine, and commercial gaming practices points to solutions and changes to game mechanics to better incorporate information considerations into wargame planning, development, and play in ways that can be customized according to available resources, capabilities, and goals. Recommendations target wargame sponsors, wargame designers, and those who are responsible for procuring new tools and recruiting personnel to support wargaming. Operations in the IE play a role across the spectrum of conflict, and their effects and consequences extend beyond the IE. As the nature of conflict changes, it is critical that wargames reflect realities on the ground, supporting forces in using and defending against increasingly important information-based tools of warfare.