Puzzle

Alexkdeveloper Sudoku is a Sudoku game with multiple difficulty levels. A free and open source game

GaticTacToe is a tic-tac-toe game. A free and open source game

Super Nonogram – solve an unlimited number of procedurally generated nonogram puzzles. A free and open source game

CoreChess is a graphical interface for various chess engines. A free and open source game

HyperRogue is a roguelike puzzle in a hyperbolic plane. A free and open source game

KFourInLine is a free and open source board game for two players in which players try to line up a row of four pieces

iQPuzzle is a free and open source, multi-platform, diverting I.Q. challenging pentomino puzzle

KBlackbox – free and open source game of hide and seek played on a grid of boxes where the computer has hidden several balls