MetaWitness

MetaWitness: The Witness but meta

The goal of the game is to manipulate a board to make it unique-solvable. A level is considered completed once it has one and only one solution.

It is totally different from any other witness fan game. Try it by yourself!

It will not be easy tough. Hint: Brute force is discouraged. If you cannot get any idea of a level, try to observe the neighboring levels.

Spoiler warning: make sure you have played The Witness (2016) and at least know how each mechanic works.

The original game idea of MetaWitness is by Alith at WitCup 8 (a fan-made, fan-held contest of The Witness). If you want to see the earliest version of MetaWitness, you may check it here. Notice the earliest version is purely paper-based (e.g., there is no client to tell you whether your solution is correct or not).