strategy game, Civilization V, hexagonal tiles, historical leaders, turn-based, empire building, world map, diplomacy, military conquest, cultural development, scientific research, city-states, wonders of the world, moddable, single-player, multiplayer, fog of war, grid-based movement, unique units, Civilization VI, district system, dynamic diplomacy, active research, enhanced graphics, multiplayer alliances, city expansion, leader agendas, environmental effects, strategic resources, cultural victories, trade routes, espionage, barbarian interactions, day-night cycle, complex terrain, 3/4 view, detailed textures, ambient occlusion, soft shadows, realistic water, high-resolution textures.