- Level is continuous. Instead of just categories like "Easy, medium, hard", you can adjust the how diffcult the puzzle is by drag the slider!
- Undo & Redo For a position, you can just click it to redo.
- Visualized Diffculity You can see how diffcult the puzzle is according to the label in the right side of slider.
- Different colors in near blocks" Now, you can easily fingure which block you are in.
- New Puzzle at any time You can start your new puzzle at any time.
- You Win Once you filled up the puzzle, there is a big label to tell you that you win.
- Only one cell is selected At the same time, only one cell can change its color whatever ever what you have done.
- Random Puzzle You can get a new puzzle which is generated randomly.
If there is a bug, please tell me.