Build your B1. Beat your weak spots.
Play a quick run and the arcade will learn which areas need the most practice.
Recommendations use only your saved activity on this device.
10 fixed questions for today · unseen and review material mixed together.
The daily challenge changes with your local calendar date. Missing a day never removes XP or mastery.
Each mode uses the same B1 bank in a different way.
Nothing is locked. Your cards show what you have cleared and what still needs work.
0 unlocked · achievements add arcade XP but never change CEFR status.
A saved mistake is mastered after you answer it correctly in two separate game runs.
Mastery now uses accuracy, repeated retrieval over time and different exercise formats where the bank provides them. A skill can become due for review again.
The 300 questions are mapped by world, strand, language family, exercise format and diagnostic error pattern. These labels drive adaptive practice; they do not change the English level.
When a wrong option represents a recognisable B1 learner error, the arcade remembers the error pattern—not just the question.
Save useful questions and rules while you play. They stay on this device and are included in progress exports.
Solo arcade: play 10–15 questions, then use Weak Spot Trainer or the persistent Mistake Bank.
Pair mode: one partner reads the question aloud, the other answers. Swap roles after each boss.
Group challenge: play on a shared screen and award one point for the answer and one point for explaining the rule.
Independent B1 grammar and vocabulary practice · v0.5.1. Arcade rank, speed scores and streaks are in-app game markers, not CEFR assessments. This app is intentionally separate from Reading, Writing, Listening and Speaking skills products.