Day of Defeat: Source

Day of Defeat: Source is a long-running multiplayer WWII game that launched on July 12, 2010. It has never had a post-launch content roadmap, DLC offerings, or expansion announcements — it shipped as a complete, standalone multiplayer experience. The developer news shows only technical maintenance and compatibility work: a security and stability patch on July 2, 2021, and a more substantial technical update on February 18, 2025 that added 64-bit support, improved networking, UI scaling for modern displays, and prediction fixes backported from other Source engine games. These updates reflect Valve keeping the game functional and compatible with modern systems, not a new content development cycle. No new maps, modes, or gameplay content has been announced or released. The game is complete as shipped.