Real-time tactics or RTT is a subgenre of tactical wargames played in real-time simulating the considerations and circumstances of operational warfare and military tactics. It is differentiated from real-time strategy gameplay by the lack of classic resource micromanagement and base or unit building, as well as the greater importance of individual units and a focus on complex battlefield tactics.
Typical real-time strategy titles encourage the player to focus on logistics and production as much as or more than combat, whereas real-time tactics games commonly do not feature resource-gathering, production, base-building or economic management, instead focusing on tactical and operational aspects of warfare such as unit formations or the exploitation of terrain for tactical advantage. Real-time tactical gameplay is also characterized by the expectation of players to complete their tasks using only the combat forces provided to them, and usually by the provision of a realistic (or at least believable) representation of military tactics and operations.
This contrasts with other current strategy game genres. For instance, in large-scale turn-based strategy games battles are generally abstracted and the gameplay close to that of related board games. Real-time strategy games de-emphasize realism and focus on the collection and conversion of resources into production capacities which manufacture combat units thereafter used in generally highly stylized confrontations. In contrast, real-time tactics games' military tactical and realistic focus and comparatively short risk/reward cycle usually provide a distinctly more immediate, intense and accessible experience of battlefield tactics and mêlée than strategy games of other genres.
As suggested by the genre's name, also fundamental to real-time tactics is real-time gameplay. The genre has its roots in tactical and miniature wargaming, where battle scenarios are recreated using miniatures or even simple paper chits. These board and table-top games were out of necessity turn-based. Only with computer support was turn-based play and strategy successfully transposed into real-time. Turn-based strategy and turn-based tactics were obvious first candidates for computer implementation; but as computer implementation eventually allowed for ever more complex rule sets, some games became less timeslice-focused and more continuous until eventually "real-time" play was achieved.