Steam Deck compatibility
FlashBoss
Sale ends Jul 9, 2026, 5:00 PM UTC
Positive-20%
$4.99
$3.99
- Release date
- Feb 17, 2026
- Steam Cloud
- Steam Cloud
Unknown
Build vocabulary with spaced repetition and boss fights. Listen · Read · Repeat · Rate · Fight. Choose your master: from 5 minutes to half an hour plus per day. Four starter packs free; full 3,000-word courses in four languages, from total beginner to C1 language in use.