Need a new relaxing puzzle game that doesn't require guesswork? Recently hexceed gained a Native Linux port. While the main game is completely free, it does have paid DLC which includes a ton of extra content. The main game has a Very Positive review score on Steam so looks like another quality game to add to your collection.
The Linux port was noted in a recent news post, which also went over another DLC pack that went up adding over 100 new levels to play through. I don't think the gameplay needs much explaining really, it's just an interesting small twist on the well-known mechanics of Minesweeper but looks worth a go.
Available on Steam.