I’ve come across a great online puzzle game called 3D Logic. 3D Logic is played on three faces of a cube. Each of the three cube faces has a grid on it (of varying sizes depending on the level.) Some of the grid squares will have a colored outline, two of each color, and the goal is to fill the empty grid squares with the appropriate color to create a path between the two outlined squares of the same color. The first levels are easy, but it gets tricky pretty quickly. In the beginning, I could figure out all of the paths and then fill them in. Later, I had to fill the paths in one block at a time, alternating colors.
There are no instructions with the game, which was a little bit confusing at first. To fill in a square, you must first select one of the outlined squares. Then both squares with the same colored outline will be highlighted and you can fill in empty squares with that color.

I found a nice, simple puzzle game through 