Jewel Game is the best 3 match jewel game around offering multiple levels of play and without any of the hassle of competing games. Each level is different with some requiring horizontal and vertical matches while others requiring diagonal matches.
Add into the mix that some levels allow only orthogonal jewel moves while other allow only diagonal moves and you can see the challenge when maximizing your score. Some levels use a 10 second lag timer allowing you to accumulate long and numerous matches within the time to achieve those really high scores. Finally, there are the High Voltage levels where the points really add up. Try it out!