Series - Super cheap when on sale. Colored puzzles. Has choosable difficulties

Visual novel hybrid. Only recommended if you like the story. There's no pure puzzle mode.

Series. Very polished for a quick puzzling experience.

Series. Mega puzzles use the same puzzles as normal, just with different clues. Take a long break before doing those so you won't remember the answers.

Short and sweet, gameboy themed.

Free. Can be played online @
https://fredison.itch.io/pikupals-picross-plus-aliens

Visual novel puzzle hybrid. You can skip the cutscenes!

Added for the daily speedrun challenge. 5 7x7 puzzles in 2 minutes. I enjoyed doing those for a long time. Game itself is okay.

Series - Super cheap when on sale. Colored puzzles. Has difficulty options you can choose.

There are more than 10 games, but some of the later ones have issues/changes.

Steam recommendation. There's over a thousand puzzles on the workshop, and the ingame interface makes downloading and playing them easy.