SuDokuL

This is a Sudoku game made in C++ and SDL1.2/SDL2, playable on PC, Linux, Switch, Wii U, Wii, Gamecube, Vita, PSP, FunKey, and PortMaster.

• Play Sudoku puzzles of Easy, Normal, Hard, or Very Hard difficulty
• Mouse, keyboard, controller, and touch screen support
• Supports any resolution from 240x240 and above (must be 1:1 aspect ratio or wider)
• Save data support
• Eight different scrolling backgrounds with customizable settings (size, scroll speed, angle)
• Calm and invigorating MOD music to suit your mood
• Shaded text for a nice 3D look
• Runs on a potato
• Optional auto-fill and erase-mistake cheats in case you get stuck

https://github.com/Mode8fx/SuDokuL

(By the way, the reason some releases have different version numbers is because v1.41 was created to address issues on specific systems; the listed downloads are the latest for each respective system.)