4digits
A guess-the-number game, aka Bulls and Cows
Amoebax
Defeat your opponent by filling up their grid up with garbage.
Anagramarama
fast paced anagram puzzle game using SDL

Atomix
A puzzle game about atoms and molecules

Berusky2
Rescue the bugs!

Berusky
Rescue the bugs!
Biniax-2
Colorful Logic game with arcade and tactics modes
Black-Box
Find the crystals

Blocks Of The Undead
Tetris Attack clone with spooky undertones

Brain Party
36 puzzle games for all the family
ColorCode
Advanced clone of the MasterMind code-breaking game
Connectagram
Unscramble words placed in patterns

CuteMaze
Find targets in a maze
Einstein
"Puzzle game inspired on Einstein's puzzle"

Enigma
Uncover pairs of stones while navigating obstacles using a marble
Fish Fillets
Puzzle game with 70 levels

Five or More
Remove colored balls from the board by forming lines

FLTK Sudoku
Suduku Number Game

Four-in-a-row
Make lines of the same color to win
gbrainy
Play games that challenge your logic, verbal, calculation and memory abilities
GFingerPoken
GFingerPoken logic game
GLPeces
Play with 40 tangrams and more than 31,000 figures
Multiplication Puzzle
Figure out which letters are which numbers

Klotski
Slide blocks to solve the puzzle

Net
Rotate every tile to fix the network

Mines
Clear hidden mines from a minefield
Taquin
Slide tiles to their correct places

Tetravex
Complete the puzzle by matching numbered tiles
gnurobots
Program your robot and watch it explore
Golly
A Conway's Game of Life simulator
Tangrams
gtans
GtkBalls
Puzzle game

Gtkboard Board Games
Play various and sundry board games
Gweled
Play a puzzle game similar to "Diamond Mine"

Hex-a-hop
Puzzle game based on hexagonal tiles

Hexalate
Spin circles to match colors

Hitori
Play the Hitori puzzle game

INSTEAD
Simple Text Adventures Interpreter

jigzo
Photo puzzle game for children

KDiamond
Logic game

Krank
a little casual game

KSudoku
KSudoku, Sudoku game & more by KDE

Kubrick
A 3-D game based on Rubik's Cube
Laby
Learn how to program with ants and spider webs