I wouldn't say it's bad, but it is overrated. Half Life 2 is deserving of much of its praise, but all the people who look back and hold up Half Life 1 as one of the Holy Grails of gaming must be a little disillusioned. Sure, back in the day, it was quite impressive, but not really more so than Crysis is today. Its just that now, people have got used to the sudden jumps in technology and ideas for games.