01 — The Dealer
How It Works: Solitaire That Teaches
No lesson trees, no drills: Language Solitaire deals your vocabulary onto a card table and lets solitaire do the teaching. Match categories, build runs, win crowns — the learning happens on the way.

The board looks like solitaire because it is solitaire — except the suits are meaning. Cards belong to categories (Pets, Fruit, Furniture), and you build runs by sorting words into their category crowns. Grab any card in a face-up run of the same category and the whole run moves together. Play in Words, Pictures, or Mixed mode: text only, image only, or the classic alternation of both.

Under the table sits a real learning spine. Every word you meet lives in a mastery ledger — five Leitner stages with review intervals of 1, 3, 7 and 21 days — and the game composes your next level from the categories most due for review. Clear a category and a Crown Check appears: the word you most need, spoken aloud, with three translation tiles. Get it right for bonus coins; get it wrong and it simply shows you. It never blocks, and it never nags.
The home screen doesn't guess. 'You know 8 of 12 words' is read from the ledger, one word at a time.
Streaks are handled like an adult designed them: miss exactly one day and a Streak Freeze bridges it automatically; miss more and a repair is offered, not demanded. Consecutive wins multiply your coins ×1.5 then ×2. And one daily challenge board is dealt identically to every player on Earth — same cards, same shuffle, one leaderboard.