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FlashBoss - Esperanto Pareto 1: the next 1,000 words

Fibonacci spaced repetition and boss fights.

Picks up where the free Esperanto Core course ends: the next 1,000 most useful words, tiers 6–10 — deeper into the built language whose affix system turns one root into a family of words. Every card carries an Esperanto example sentence with full text-to-speech in a native-trained Esperanto voice.

And Esperanto arrives speaking your language: every card carries its translations, translated example sentences, study notes and lessons in English, German, Spanish, Japanese, Russian and Simplified Chinese; the interface speaks six.

In this pack:

• 1,000 high-frequency Esperanto words in five tiers (6–10), arranged in themed clusters

• Text-to-speech on every target word and example sentence

• Translations and study notes in English, German, Spanish, Japanese, Russian and Simplified Chinese — full coverage on every card

• 28 reference lessons — affixes, correlatives and grammar tier by tier — readable in the same six languages

• Boss-fight graduation: no cluster is cleared until its hardest words are mastered

Requires the FlashBoss base game — the free Esperanto Core course lives inside it.

The full word list and all reference lessons for every FlashBoss pack are available on the website, along with a playable boss-fight demo. The manual link in the right sidebar opens the voice samples.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

AI was used in the coding of this game, the asset generation, brainstorming practical solutions (knowledge about opensource tts options, distribution options), and in helping problem solve most steps in the development, and application process. It allowed one developer to create a high quality, low cost educational product to greatly assist in language learning worldwide.