Not very good, even by old standards
Honestly, while I apprecied that this actually has a story, the mindless left clicking (not to mention Right click->play to skip the current fight) meant that this game is rather underwhelming. While this may have been a rating of 3/5 for 2000, it's a 2/5 for 2008.
Thanks for the chance to relive some portal history
Brontoz