small apps for various use cases
A browser-based digital Jass scoreboard that replicates a traditional Swiss chalk slate board with the classic Z/Z layout.
Features:
- One SVG slate scene with two chalk Z's — both readable from both sides of the table (point-symmetric Z geometry, far half rotated 180°)
- Classic Schieber chalk notation: 100s on the top bar, 50s on the diagonal, 20s right-aligned on the bottom bar — all bundled tally-style (
||||\), rest as chalk number; marks stack up per round and are never converted (chalk stays chalk) - Free score entry (1–500) plus quick chips (+20/+50/+100/+157); negative entries correct mistakes (marks wiped highest → lowest)
- Two teams, editable names and target score (default 2500)
- Win detection with animated overlay (gold glow, chalk particles)
- Undo last entry, reset game, rotate board orientation
- JPG export of the board (just the two Z's, no controls)
- Game state persisted to localStorage — resume on page reload
- Responsive: works on mobile (320px+), tablet, and desktop
- No external frameworks — pure HTML, CSS, Vanilla JS
Play: jass-scoreboard/index.html
A fun, educational geography quiz game for kids around 10 years old!
Features:
- 195 countries with bilingual names (English/German)
- 3 game modes: Guess the Continent, Guess the Country, Guess the Capital
- Earn coins and track your fire streak 🔥
- Smart hint system (3 hints per question)
- Unlock medals for achievements and extraordinary place names
- Dark mode with kid-friendly design
- Fully keyboard accessible
- Mobile-friendly design
- Progress saved locally (no sign-up required)
Play: geotriad-game.html
A fun, kid-friendly browser game where players identify Pokémon from images and earn coins and medals!
Features:
- 151 Generation 1 Pokémon to identify
- Earn coins for correct answers
- Unlock achievements and medals
- Track your streak and progress
- Dark mode with high contrast accessibility
- Fully keyboard accessible
- Mobile-friendly design
- Progress saved locally (no sign-up required)
Play: pokemon-game.html
Simple math practice games for addition and subtraction.