dota is a great fast paced game for all strategy fans(fps fans mite like it too)  

any one interested in playing warcraft3 would knolw about Defense Of The Ancients map. its a real fast paced game, compared to normal strategy games, which will have anyone and anybody addictd to it. And the dota forums are very helpful for all in mastering the art of using a hero in a one on one fight or team battles. This game is basically a multiplayer game, but the creators have improved the ai so much that evry player rises in standard even just playing the bots.