Ninjacha

NINJACHA blends fast arcade action with Chinese character learning. A wall of character bricks rises from the bottom; answer quiz questions quickly to clear bricks and survive. The countdown adds urgency, and the wall grows as time runs out, challenging your reflexes and memory while you learn Mandarin one character at a time.

Features include 3,000+ characters from the HSK curriculum with pinyin, stroke order, and definitions; multiple quiz types; lesson mode and free play; adaptive difficulty; offline play; cross-platform support; and no ads. Ideal for Mandarin learners who want quick, engaging practice or HSK prep in a game format.