Crystalscope combines arcade elements with a bit of strategy. There are nine rather different games packed into it, and three skill levels for each one. A fancy playing field shape gives you a great chance to excersize your pool skills. One more nice thing - the two-player modes were added - no more arguing with your relatives over whose turn is to play now. And if you are home alone, just play against computer - the built-in intelligent engine is quite hard to beat. In fact, the demo mode itself is much fun to watch and relax after a busy day. Both installer and uninstaller are included. Upgrades and support (if you ever need it) are free for registered users.