Plexagon is a connect-the-dot puzzle game. It's a lot like the mobile game Flow, but is hexagonal. If you can play that, the instructions are pretty much the same (except you can only start from one end). If you don't want to just do 5x5 levels, click Jump for more options. Total of 100 (+5) levels. Some basic instructions: connect all the dots and fill up the board. Start from a dot on the screen and drag a path toward the dot that has the same color. You win when you completely fill the board with paths and when all the dots are connected. On the menu, hit Start to play from level 1, but if you want to start from a different difficulty, hit Jump to toggle all the options. Expert stages include 13x13 to 17x17. Blind Expert stages are extremely hard stages which only show one color at a time.
Substantial rewrite of rendering, data management code. Added hint mechanism and hints for a few of the first 30 levels (press H to show hint) This is an excellent game - props to original coder -Nova-