I've tried uplink some times ago. It is good if you like to use the mouse

You can beat some levels without actually touching the keyboard. You buy a password breaker wich breaks automaticaly into servers, a anti-trace utlity wich warns you if there is someone trying to trace you, and the exact time until the trace is complete... The interface is cool, but unintuitive. So, it is an entertaining game, but it really doesn't deserve the 'hacking game' classification, it's too unrealistic.
If you are interested in safe hacking, I would recommend
http://www.secinf.net/harmless_hacking_ ... acker.htmlIf you only want to play a game, try Digital Hazard. You can get a demo for the three first levels on
http://www.exosyphen.com/. It still has an automatic brute-force password cracker for servers

but at least you give your keyboard some use...