Battle Arena
Choose your challenge and prove your prompting skills
Showing 50 battles
Calculator App
Build a calculator with basic and scientific operations, keyboard support, and history.
Color Palette Generator
Generate harmonious color palettes with various color theory rules.
Countdown Timer
Create multiple countdown timers with presets, alerts, and persistence.
Unit Converter
Convert between units across multiple categories with real-time results.
Flashcard App
Create and study flashcard decks with spaced repetition.
Habit Tracker
Track daily habits with streaks, statistics, and visual calendars.
Recipe Scaler
Enter recipes and dynamically scale ingredients by servings.
Expense Splitter
Split expenses among a group and calculate who owes whom.
Mood Journal
Log daily moods with notes, tags, and trend visualization.
Bookmark Manager
Organize bookmarks with folders, tags, search, and import/export.
Typing Speed Test
Measure typing speed and accuracy with various text modes.
Emoji Picker
Searchable emoji picker with categories, skin tones, and recent usage.
Markdown Editor
Build a split-pane Markdown editor with live preview, syntax highlighting, and file export.
Todo App Speedrun
Build a fully functional todo app with CRUD operations, filtering, and local storage persistence.
Blog Engine
A full-featured blog platform with markdown posts, categories, search, and RSS.
Expense Tracker
Track income and expenses with categories, charts, and budget goals.
Image Gallery
A responsive image gallery with lightbox, filtering, and lazy loading.
Minesweeper
Classic Minesweeper with multiple difficulties, flagging, and auto-reveal.
Form Builder
Drag-and-drop form builder with preview, validation, and JSON export.
Memory Match Game
Card matching memory game with themes, difficulty, scoring, and multiplayer.
Calendar App
A full calendar with events, drag-to-create, and multiple views.
File Explorer UI
A file explorer interface with tree view, breadcrumbs, and file operations.
Connect Four
Classic Connect Four with AI opponent, animations, and game analysis.
Notification Center
A notification system with types, actions, grouping, and real-time updates.
Survey Builder
Build surveys with question logic, response collection, and results dashboard.
Social Feed
A social media feed with posts, comments, likes, and infinite scroll.
Hangman
Classic Hangman with categories, difficulty, hints, and multiplayer.
Simon Says
Simon Says memory game with sounds, increasing difficulty, and modes.
Chat Room
A real-time chat application with rooms, typing indicators, and message features.
Invoice Generator
Create professional invoices with line items, tax, and PDF-ready output.
Link Aggregator
A Hacker News / Reddit-style link submission and ranking platform.
Word Search Generator
Generate and play word search puzzles with custom words and difficulty.
Voting App
Create and vote on polls with real-time results and analytics.
Poll Maker
Create interactive polls with real-time visualization and sharing.
Comment System
A threaded comment system with votes, replies, and moderation.
Typing Race Game
Competitive typing game with racing visuals, multiplayer, and leaderboards.
Crossword Puzzle
Generate and play crossword puzzles with clues, validation, and hints.
Issue Tracker
A GitHub-style issue tracker with labels, milestones, and kanban view.
Paste Bin
A code/text sharing platform with syntax highlighting and expiration.
Feedback Widget
An embeddable feedback widget with screenshots, ratings, and dashboard.
Event Scheduler
Schedule events with availability, reminders, and conflict detection.
2048 Game
The classic 2048 sliding tile puzzle with animations and game modes.
Battleship Game
Classic Battleship with ship placement, AI opponent, and game log.
Email Template Builder
A drag-and-drop email template builder with preview and HTML export.
Recipe Manager
A recipe management app with search, categories, meal planning, and shopping lists.
Project Board
A Trello-style project board with cards, lists, labels, and drag-and-drop.
API Playground
A Postman-like API testing tool in the browser.
Cron Expression Builder
Visual builder for cron expressions with human-readable descriptions and preview.
Log Viewer
A log file viewer with filtering, search, and real-time streaming simulation.
CSS Selector Engine
Build a CSS selector matching engine that queries a DOM tree.