Don't guess! Use your logic and carefully plan your every move. Each level has only one unique solution.
Come up with your own strategies for solving larger grids and more-challenging levels.
FEATURES
- Thousands of levels
- Learn hundreds of cool facts about space, planets, and moons!
- No rush: play at your own pace by starting a level and completing it later
- Exclusive new levels every day
- Unlock real-life images of planets!
- Different grid sizes and incrementing levels of difficulty.
