Eureka! Star Battle

Christopher Hahn

About this game

Eureka! Star Battle is a fun logic puzzle for those who love deductive reasoning. Generate endless puzzles, challenge your mind, and experience the Eureka moment.

THE PUZZLE
Place exactly 2 stars in every row, every column, and every region. Stars may never touch each other — not even diagonally. Every puzzle has a unique solution reachable through deduction.

FOUR DIFFICULTY LEVELS
• Easy — Pure deduction, no search required. Perfect for learning the rules.
• Medium — Moderate reasoning chains. A satisfying daily puzzle.
• Hard — Requires careful multi-step logic. For experienced solvers.
• Expert — Deep deductive chains that will challenge even seasoned puzzlers.

FEATURES
• Endless puzzles — Generate new challenges anytime
• Challenge friends — Share puzzles and compete for the best time
• Undo/redo — Full history, no mistakes are permanent
• Hints — Get help when you’re stuck
• Mosaic mode — Create your own custom puzzle regions
• Clean, intuitive controls
• Fun star and space facts as you play

What’s new

- Fixed the top row of the puzzle being hidden behind the Android status bar.
- New info-screen option to switch between a single-row toolbar and the wrapped two-row layout (wrapped by default for easier tapping).
- The X (eliminate) tool is now selected by default — most players start a puzzle by crossing out cells.
- Acknowledgements screen now scrolls smoothly and shows the full license text for all included open-source libraries.