Lingo is an open world puzzle game that feels like a fusion between the witness, antechamber, and word puzzle. And it's wonderful for it.
Lingo is, unfortunately, one of those games that's best played as blind as possible, meaning it's hard to properly recommend. The simple gameplay mechanic is this: you will find panels with a word on them in the world. Type the correct answer in the panel to make things happen. That's it!
The game has a nice fusion of the rule-discovery from The Witness and the non-euclidean world geometry of Antechamber. Received a few extra maps with bonus mechanics after its initial release, has fantastic custom map support, and a sequel with completely separate mechanics!