EARLY ADOPTER BONUS

Get German Core 1000 (normally $4.99) FREE when you buy during launch. Esperanto Core included permanently.

About This Game

FlashBoss — Learn German vocabulary through spaced repetition and boss fights

Master 3,000 words through real German sentences, Fibonacci-timed review sessions, and battles that prove what you know. Built by a CELTA-certified language teacher. Suitable for ages 12+. No subscription.

The Core Loop

Each day, you'll review flashcards using a proven spaced repetition system. Cards you know well appear less often; cards you struggle with come back sooner. Maintain your daily streak to build momentum, or use the Grimoire to bank extra days of practice as "Drive" — insurance against life getting in the way.

Boss Fights

Vocabulary is organized into thematic clusters, each guarded by a boss. Defeat the boss to purge your deck of mastered content and advance through tiers. One step forward, two steps back: An incorrect answer pushes you toward the edge, a correct answer drives you forward!

Choose Your Master

Six masters offer different philosophies and session limits:

• Luna — Gentle and encouraging, limits daily Grimoire sessions to prevent burnout

• Claude — Analytical and precise, unlimited sessions for the self-directed

• Odiin — Stoic warrior-poet, unlimited sessions for the dedicated

• Shen — Wise and measured, moderate session limits

• Kitsune — Playful trickster, unlimited sessions with a mischievous edge

• Aquila — Noble and disciplined, moderate session limits

What's Included

The base game includes German Core and Esperanto Core — 1000 words each with full example sentences and native audio pronunciation. FlashBoss is designed to get you from zero to interacting in the target language. Additional vocabulary packs are available as DLC.

Why Terminal?

FlashBoss runs in a terminal for that retro aesthetic and lightweight footprint. Language education shouldn't require expensive equipment.

Key Features

• Spaced repetition algorithm optimized for long-term retention

• Daily streak system with Drive protection for missed days

• Boss fights that gate vocabulary progression

• Six distinct masters with unique personalities

• Full audio pronunciation for both languages

• Lightweight and distraction-free

Setup Requirements

• Windows 10+ recommended (Windows Terminal required for emoji support; older systems supported with possible display issues)

• macOS 10.15+ / Ubuntu 20.04+ recommended (older systems supported via espeak)

• Dark terminal theme recommended

• Keyboard with numberpad required

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.