Supported languages
Published language support and announced additions.
Listed on Steam
English, Spanish (Spain), Simplified Chinese, Traditional Chinese and Japanese have interface and subtitle support. Full audio is listed for English.
Announced additions
The September team update announced Korean and Thai support as coming soon; that does not establish launch availability.
Older English-only advice
The May 1.0.2 demo notes predate later translations. Check the current storefront and your installed build rather than treating those notes as today’s language list.