fantasy strategy game, Age of Wonders 4, multiplayer session, save feature, co-op gameplay, turn-based tactics, high fantasy races, diverse units, magical spells, strategic map, diplomacy, city building, resource management, cloud save, cross-platform, autosave, manual save option, quick save, in-game menu, user interface, seamless experience, real-time synchronization, backup system, game version compatibility, player profiles, encrypted save files, game progress, multiplayer campaign, online play, persistent world, autosave interval settings, game lobby, host controls.