Neyyah

Here's an excerpt from Neyyah's Steam description:

Neyyah is a first-person point-and-click adventure game, set within a collection of remote almost abandoned islands, separated by a series of complex portal machinery and laced with the fingerprints of two very intriguing cultures.

Upon waking up from a strange dream, you find yourself transported to a place called Olujay, where you meet Vamir, who sends you to Neyyah in the hope you will be safe there. For reasons you will discover upon your many explorations, Vamir needs you for a matter of great urgency.

A wrong must be righted. A civilization avenged. A secret revealed.

You end up on Neyyah with only a small amount of knowledge given to you by the frantic Vamir on what you’re supposed to do when you’re there.

Things don't go as planned. In order to return to Olujay and reach Vamir, you will have to explore Neyyah – linking together the mechanical contraptions, rusted levers and blue plasma portal systems scattered throughout the bizarre landscapes, as you learn about the cultures that have shaped Neyyah.

Not everything is as it seems, and as you wander further into Neyyah's ancient heart, your discoveries will lead you to uncover the very truths behind the fate of Earth itself...