Release Date
The Mermaid Mask launched on July 16, 2026 for PC, PS5 and Nintendo Switch.
Launch timeline
Based on the official Steam news feed:
- July 8, 2026 — Gab Smolders' Early Preview
- July 9, 2026 — "The Mermaid Mask - Out Next Week!"
- July 15, 2026 — "The Mermaid Mask is out tomorrow!"
- July 16, 2026 — OUT NOW! global launch
- July 18, 2026 — Update Notes (patch 18th)
- July 19, 2026 — Update Notes (patch 19th)
The game was first featured as a demo during Steam Next Fest, and the free demo remains available on Steam.
Demo and Next Fest history
Before launch, The Mermaid Mask appeared as a free demo during Steam Next Fest, letting players try the core loop before buying. Importantly, that free demo remains downloadable after launch — so undecided players can still try before they buy.
Post-launch patches
The developer kept a fast update pace: patch notes followed on July 18 and July 19, 2026. Exact fixes are per the official notes (to be confirmed). The quick follow-up shows an active post-launch support attitude.
Sources: Steam News API (appid 1696770), fetched 2026-07-19; Steam Store API (appid 1696770), fetched 2026-07-19.