Should I learn N5 grammar first?

Yes; this deck assumes basic tenses and particles.

How do I remember connections?

Learn them with examples; each hint gives a real sentence.

Where is progress stored?

Only in local localStorage, never uploaded; full backup/restore is available.

Are 40 patterns enough?

It is a core subset; N4 has roughly 80-100 patterns, expand later.

LEARNING GAME

Japanese N4 Grammar: Gamified 40-Pattern Deck

N4 grammar determines whether a sentence works. See the pattern, recall its meaning and connection, reveal, then review on a forgetting curve. Each card includes a real example; finish N5 basics first.

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Progress is stored locally in localStorage and is lost if you clear storage. Reviews use 1/3/7/14/30/60/120-day intervals.