StarBattle Online

StarBattle Online is a free browser-based logic puzzle platform that challenges players to place two stars in every row, column, and region of a grid without letting stars touch horizontally, vertically, or diagonally.

What is StarBattle Online?

StarBattle Online is a web-based implementation of the Star Battle puzzle genre. The game takes a grid with outlined regions as input and requires the player to fill it with stars according to rules. It runs entirely in a browser with no download or installation. The platform is developed and maintained by the team behind starbattle.online.

Key Features

• 2-Star Rule — Exactly two stars per row, column, and region, with a strict no-touch constraint covering all eight neighboring cells.
• 200 Progressive Levels — Handcrafted puzzles that increase in difficulty, starting with small beginner-friendly boards and advancing to larger, more complex grids.
• Daily Puzzle Packs — A fresh set of five puzzles delivered each day for consistent practice and variety.
• Unlimited Mode — Generate an endless supply of random Star Battle boards for unlimited play.
• Google Sign-In — Optional account integration to save unlocked levels and personal best times across sessions.
• Free Browser Play — No download, no registration required; start solving immediately on the homepage.
• In-Game Tools — Undo, check, hint, and reset buttons assist players during solving without revealing solutions.
• Shareable Wins — Completion times can be shared with friends to compare performance on the same puzzle.

Who is it for?

• Puzzle enthusiasts who enjoy logic deduction games like Sudoku, Nonograms, or Hitori and want a new systematic challenge.
• Casual players seeking a quick mental workout during breaks, with instant access and no commitment.
• Students and educators looking to practice logical reasoning, pattern recognition, and constraint satisfaction in a fun context.
• Competitive solvers who aim to improve their speed and accuracy, track best times, and challenge others on daily puzzles.

What can you do with StarBattle Online?

• Solve progressive puzzles — Work through 200 levels that gradually introduce more complex deductions, building skill over time.
• Practice daily — Tackle the daily 5-puzzle pack to maintain solving sharpness and experience fresh layouts regularly.
• Play unlimited games — Use unlimited mode for an endless supply of puzzles at various difficulty levels.
• Learn strategy — Read the built-in guides and blog articles (e.g., "Star Battle Strategy for Beginners") for tips on elimination and counting techniques.
• Track progress — Sign in with Google to save unlocked levels and personal best times, visible across sessions.

How does StarBattle Online work?

Players open a grid with clearly outlined regions. The goal is to place two stars per row, column, and region while ensuring no two stars touch (including diagonally). Solving typically involves marking cells that cannot contain a star (X marks), counting legal cells in each row/column/region, and placing stars only when forced. The in-game tools (undo, check, hint, reset) support this process without revealing the full solution.

Pricing

StarBattle Online is completely free to play. No paid tiers or subscriptions are mentioned. The optional Google sign-in is provided solely for progress saving and does not unlock any paid features.

FAQ

Is StarBattle Online free?

Yes, the entire game is free to play in a browser with no download or account required.

What are the rules of Star Battle?

Place exactly two stars in each row, each column, and each outlined region. Stars cannot touch each other horizontally, vertically, or diagonally (no two stars can share a side or corner).

How many levels are there?

There are 200 handcrafted levels spanning beginner to expert difficulty, plus a daily 5-puzzle pack and an unlimited mode for additional play.

Do I need an account to play?

No, you can start playing immediately without an account. Signing in with Google is optional and only saves your unlocked levels and best times.

Can I play StarBattle Online offline?

No, the game requires an active internet connection as it runs in the browser with server-generated puzzles.