"Sins of a Solar Empire" is a real-time strategy game that combines elements of 4X (explore, expand, exploit, exterminate) gameplay. Players control one of several factions in a vast galaxy, managing resources, building fleets, and engaging in tactical space battles. The game emphasizes both economic management and military strategy, allowing players to develop their civilizations while competing against others. The game features a blend of single-player and multiplayer modes, with a focus on large-scale battles and diplomacy. Players can research technologies, form alliances, and conquer planets to expand their empires. Its unique blend of strategy and real-time action has made it a popular title among fans of the genre.