No timer — think at your own pace
Plan each move and clear the grid within the move limit.
Calm 5×5 brain teasers
Tap a cell.
Reveal the cosmos.
Tap a cell to switch it and its adjacent cells. Clear all lights, collect Light Shards, adjust seven telescope lenses, and reveal one of 100 constellations.
- No timer
- 100 constellations
- Play offline
Playable demo
0 moves
Clear all lights
Tap a cell to switch it and the cells above, below, left, and right.
Constellation revealed
Key of Dreams
The Key of Dreams was said to unlock hidden celestial paths.
From puzzle to constellation
How it works
Solve puzzles, adjust seven lenses, and reveal a new constellation.
- 01
Solve the puzzle
Tap a cell to switch it and the cells above, below, left, and right.
- 02
Collect Light Shards
Solve puzzles to collect Light Shards.
- 03
Adjust seven lenses
Each solved puzzle helps adjust one lens.
- 04
Reveal a constellation
Add its illustrated story to your constellation archive.
New goals every day
Play your way
Daily Challenge
Complete five stages each day and work toward a monthly collectible reward.
Missions
Complete easy, medium, and hard goals to earn milestone rewards.
Practice
When you run out of Hearts, keep solving in Practice without rewards. Core puzzles work offline.
Constellation archive
100 constellations. 100 stories.
Rebuild your telescope, reveal the Key of Dreams, and add every illustrated story to your archive.
100constellations to reveal
In-game screenshots
Gallery
From the first grid to a growing archive of celestial stories.
Your telescope is waiting
Make the first constellation appear.
Start free on iOS or Android and solve at your own pace.