Zup!

Zup! is a minimal physics puzzle game that launched on October 4, 2016. Its only associated DLC — a cosmetic/content pack — released one week later on October 11, 2016, and there are no unreleased DLC entries on the store. The developer news for this game's page is almost entirely composed of announcements for other Quiet River titles: sequels in the Zup! franchise (Zup! Z, Zup! Y), and entirely separate games (OxU, OxU 2, CubeOS, Sin Slayers, etc.). None of these posts announce content coming to the original Zup! — they are cross-promotional posts advertising new standalone releases on different Steam App IDs. The original Zup! launched as a compact, self-contained package (40+ levels, 110+ achievements) with a single DLC that shipped within the launch week. There has been no developer communication announcing additional content, patches, or updates for this specific game. The studio is clearly still active, continuing to release new games under the Quiet River name as recently as February 2026, but none of that activity points back to new content for the original Zup! With both the base game and its only DLC fully released, no unreleased content listed, and no developer statement indicating future additions, Zup! is a complete, finished product. The completion date aligns with the release of its only DLC on October 11, 2016.