Counter-Strike: Source brings the series’ team-based action into Valve’s Source technology. Its store description highlights updated graphics and sounds alongside physics, framing the game as a tactical multiplayer shooter where coordinated play is central to the premise. The available information establishes that teamplay is the defining idea, but does not specify particular match objectives or maps.
Its distinctive design, as documented here, is the combination of Counter-Strike teamplay with Source-engine presentation and physics. The listed categories also identify both standard multiplayer and cross-platform multiplayer, without describing how those options are organized in play.
An official update announcement included with the game information mentions security and stability improvements, as well as fixes involving player models and custom maps. Those notes provide context for the game’s ongoing technical maintenance, but do not establish additional modes or gameplay systems. Taken together, the evidence supports a concise picture of Counter-Strike: Source as a multiplayer-focused action game built around teamplay, with Source technology, physics, and refreshed audiovisual presentation as its distinguishing features.