A gentle browser game for practicing Mandarin tones: guess the pinyin tone, compare characters across tones, no signup needed.
Tone Garden is a gentle little browser game for practicing Mandarin tones: one word at a time, you recall its tones, check your answer, and keep growing. Three input styles are supported (bái sè, bai2 se4, 24), and a review mode lets you compare individual characters across all five tones on the same pinyin syllable — 1,359 practice words, shuffled every session, no signup required.
Author Scott Cole's own note on his blog (September 9, 2026): "NOTE: this is a Codex-generated blog post and app" — the third entry in his series of small vibe-coded apps, live and playable right now.
中文导读：在浏览器里练普通话声调的小游戏：看词猜拼音声调（三种输入方式），附按音节跨声调比对汉字的复习模式，无需注册；作者博客原话注明为 Codex 生成。