What other games have that ancient alien mystery feel?

The Dig is a close match if you’re up for an older point-and-click adventure. Its story revolves around exploring an unfamiliar place and piecing together traces of an alien civilization. The slower pace leaves room for the mystery to build.

Subnautica has a strong exploration-and-discovery feel. You can investigate strange structures and clues on an alien ocean world while gradually learning more about the place. It’s also a survival game, so expect resource gathering alongside the mystery.

Heaven’s Vault is another option if you like archaeology more than action. You explore old sites and work to understand an ancient civilization’s written language.

Mass Effect Legendary Edition has ancient ruins and lost-civilization lore woven into a character-driven action RPG. Starfield also puts mysterious artifacts at the center of its story, though it’s a much broader space exploration game. Both are worth considering if you want a larger adventure rather than a focused puzzle or exploration game.