World of Slime Launch Roadmap
PlayX4, the 26 August Steam demo, G-STAR Busan, mobile pre-registration, and the December 2026 PC plus mobile launch.
TEAM42 has been unusually public about the calendar. This page is the wiki’s dated timeline so that release date, updates, and the homepage stats never drift apart. When Steam still prints “Q4 2026” and the official site prints “2026.12,” both are true: December sits inside Q4. We use December when TEAM42 does.
May 2026 — PlayX4 and the First Trailer
World of Slime left concept art behind at PlayX4 2026 at KINTEX. The booth ran a Slime Synthesis Lab and a collection tournament with hardware prizes. The first trailer and website showed capture, synthesis, riding, real-time hunts, PvP, and life skills such as fishing. Cross-play between mobile and PC was already part of the winter 2026 pitch. If you are writing a retrospective, start here — the systems on the Steam page were already the systems on the show floor.
August 2026 — Steam Demo (Windows PC)
The public demo went live 26 August 2026 on Steam as World of Slime Demo (app 4793900), attached to the full game (app 4671450). Official Korean and English coverage is consistent: this preview is PC-limited. The official site adds that the demo is Windows-only. Mac and mobile players wait for the full client. Wishlist counts cited before launch sat above 14,000.
Inside the demo you get the first major area, on the order of thirty slime species, field capture with Cubes, synthesis, fishing, village NPCs, and online play with friends including 1v1 and 3v3 flavoured PvP. Progress does not carry into the full game. TEAM42’s stated purpose is feedback before the December service. Use the demo guide for a feature checklist.
November 2026 — G-STAR and Mobile Pre-Registration
TEAM42 will appear at G-STAR in Busan in November 2026 to share more detail face to face. The same month, mobile pre-registration opens. The official site already collects emails and Kakao alerts for that wave. Pre-registration is not a store listing; iOS and Android pages are not up as of this writing. When they are, this page will link them. Until then, the Steam wishlist remains the PC notification channel.
December 2026 — PC and Mobile Launch
Full service is scheduled for December 2026 on PC and mobile together. Steam’s store field still says Q4 2026; worldofsli.me says 2026.12. Cross-play is the design goal so that a phone party can meet a Steam party. Extra biomes, a larger Slimepedia, ranked PvP, and the remaining story chapters belong to this build, not to the August demo. Cosmetic and convenience purchases are expected at this point; the demo has none. See monetisation.
After Launch
TEAM42 has talked about collecting demo feedback to polish the live service. Treat post-launch calendars (bi-weekly seasons, monthly species) as intent until a live patch notes page exists. This wiki will not invent a species count beyond the “100+” planning language already in community materials. When Steam News or Discord posts a dated patch, it will land on the Updates hub first and on this roadmap as a dated bullet.
How to Follow Along
Official site: worldofsli.me. Steam: World of Slime. Studio: TEAM42 (Mafia42’s developer), Seoul. Support email listed on Steam is [email protected]. The official Discord is linked from the Steam page and the website. This wiki is unofficial. We mirror confirmed dates; we do not speak for the studio.
If a date moves, we change this page and run fact checks across capture, platforms, and FAQ so that “demo is live” and “December launch” never contradict each other. Bookmark it beside the demo guide when you only have a few spare minutes before a play session.
Frequently Asked Questions
Quick answers to the most common questions about the game.
Is the full game launching in Q4 or in December?
Both. Steam lists Q4 2026. TEAM42's official site lists December 2026. December is the specific month inside that quarter.
Can I play the demo on Mac or a phone?
The August 2026 demo is a Windows PC Steam build. Mac and mobile are part of the December launch plan, not this preview.
When does mobile pre-registration start?
November 2026, the same month as the G-STAR Busan showcase. Store pages are not live yet.
Will demo saves carry over in December?
No. TEAM42 has presented the demo as a standalone preview. Rebuild your Slimepedia at launch.