The Number Observatory
Discover patterns in sapphire crystals. Begin with 4 × 4 number puzzles, then explore 6 × 6 and 9 × 9 boards in Relax or Challenge mode.
Take a closer look ↓What you will do
Discover patterns in sapphire crystals. Begin with 4 × 4 number puzzles, then explore 6 × 6 and 9 × 9 boards in Relax or Challenge mode.
Its own little soundtrack
The Number Observatory · Game Theme
The instrumental theme from The Number Observatory accompanies crystal number puzzles and discoveries among the stars.
Ready to play?
Open this activity in Gina’s play space when you are ready. Availability, progress and any unlock choices are handled there.
Launch this activity ↗Opens a new tab. Browsing the Hollow does not spend Sparks.
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