Underplayed Gems

Sudoku Challenge Pro (2026)

Sudoku Challenge Pro cover
Developer
Charles P Graham, https://simple-software-solutions.com
Platforms
Windows
Genres
Casual, Strategy
Where to get it
Steam

More by https://simple-software-solutions.com

The 3D catalog: game boxes on wooden shelves, with the cat sitting at the counter next to its greeting.

The catalog in 3D

The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.

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How it feels

A quietly focused puzzle experience where you methodically fill grids, gradually building confidence from simple patterns to complex logic.

calmmethodicalmeditativechallengingsatisfyingrelaxing

Screenshots

Sudoku Challenge Pro screenshot 1Sudoku Challenge Pro screenshot 2Sudoku Challenge Pro screenshot 3Sudoku Challenge Pro screenshot 4Sudoku Challenge Pro screenshot 5Sudoku Challenge Pro screenshot 6

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More by https://simple-software-solutions.com

This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? You can browse by platform and genre, or take this one into the 3D catalog and ask the Catbot for something closer.