Here's a link to one of the top voted strategy flash games of the year, Spybot - the Nightfall Incident:
http://jayisgames.com/archives/2005/09/spybot_the_nigh.phpNot too long, but you might find some of the stages almost impossible to beat. My challenge for the people that actually attempt to finish this game: lets see if anyone can beat the last stage (clear all programs) in 8 moves or less

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