Portal

Portal is a classic single-player puzzle game that originally launched on October 10, 2007 as a complete, self-contained experience. The game received no substantial post-launch story content — it was designed and shipped as a finished product. The most significant post-launch addition was Portal with RTX, a free graphical overhaul DLC developed by NVIDIA Lightspeed Studios, which launched on December 8, 2022. This reimagined the original game with full ray tracing, high-resolution textures, and enhanced models. Both DLC items in the store listing (the soundtrack and Portal with RTX) are released, with no unreleased content remaining. Valve has continued to issue occasional maintenance patches — most recently on June 27, 2025 — keeping the game running smoothly across platforms and compatible with mods. These updates address technical issues (crash fixes, graphical effects, menu improvements) rather than adding new gameplay content, and are consistent with Valve's long-term stewardship of its classic titles. No future content has been announced. The game's store description, written in launch-era language ("a new single player game"), reflects that Portal shipped as a complete product. With all DLC released, no outstanding commitments, and no developer statements pointing to future additions, the game's content is complete.