Observation puzzle · Thekla, 2016
The Witness
Alone on a beautiful island full of line puzzles, you slowly learn a silent language of rules. Then you start to see puzzles everywhere.
Puzzle profile
What you do
Draw lines through grid panels; each area teaches a new rule without words, and the island itself hides secrets.
Who it suits
Patient thinkers who love discovery. One of the hardest and most rewarding games here.
The first lock
A dark tunnel, a gate, a single line puzzle. Then a bright island opens, with no instructions at all.
Deeper locks
Each area has its own rules, learned by doing. Combining them later is mind-bending.
When you are stuck
Walk away from a stuck panel and solve another area. Come back later; fresh eyes work wonders.
Opens easily
- Brilliant wordless teaching
- Stunning island
- Huge depth
Sticks a little
- Very hard late on
- Little story
The score
Overall 4.8 out of 5 · how we score
Verdict
The puzzle game's masterpiece. Take your time.
Written by the Copper Key desk. Updated 25 October 2026. Facts checked against publisher and store pages at that date.