Major update

The Full Moon Sale — FlashBoss 50% off for three days

FlashBoss · published 13 days ago · build 24948600

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As of today, the entire FlashBoss interface — menus, lessons, boss fights, achievements, your master's own words — runs in five languages: English, German, Japanese, Spanish, and Simplified Chinese. Ctrl+L switches instantly, on any screen.

New today: English Core

Our first course built from the ground up for learners of English from a foreign language — 1,000 high-frequency words, and every card meets you in German, Japanese, Spanish, or Simplified Chinese: translation, translated example sentence, and study notes in your language. Not for native English speakers — your packs are Adept, Advance, and the Roots series, all in English.

Also new: English Voice (F)

A second English voice for the whole English line — out now as DLC.

Recently released: French Core

1,000 words of Metropolitan French — the A1–A2 foundation, with color-coded noun genders and audio on every card.

Recently released: French Pareto 1

The next 1,000 words of French, straight after Core.

The Full Moon Sale — 50% off, three days

Look up tonight. The base game is half price until August 29 — the foundation courses in German, Esperanto, and Toki Pona ship free inside it, in all five languages.

Other announcements

All events

Release3 Sep 2026Latin Core is out: FlashBoss meets its first dead languageLatin, the first dead language Latin Core is live: the first thousand words of Latin, in the FlashBoss way — 20-word clusters, spaced repetition, a boss at the end of every cluster. We rehearsed the method on two constructed languages, Esperanto and Toki Pona, and learned how far it stretches. Latin is the first language with no living speakers to check us, and the answer is the same. Built to…Major update31 Aug 2026English Pareto 1 and 2 are released. New Russian InterfaceEnglish Pareto 1 and Pareto 2 are live — and will be discounted with all currently available FlashBoss content during the Autumn Sale. Russian joins as the sixth and final interface language. This is the third major announcement in two months — and the last of the Year of the Horse. Two English bundles The complete English course now comes as two editions at one price: the American English Bund…In-game event29 Aug 2026French Pareto 2 is live — the French line reaches 3,000 wordsFrench Pareto 2 is live. The last 1,000 words of the French line — Core, Pareto 1 and Pareto 2 now carry French out to 3,000 words. What is in it 1,000 words across five tiers and forty clusters, each cluster closed by a boss fight. 566 of them are nouns, every one carried with its article and colour-coded by gender, so le and la are learned with the word instead of after it. Verbs, adjectives…