The RTS mammoth !
Together with Starcraft its the biggest Progaming RTS ever created. I myself played Warcraft 3 for pretty much 2 whole years, climbing the ladders and participating in tournaments. Just like with all other Blizzard games WC3 takes 30 minutes to learn but years to master and just like the others you can play them for 1000s of hours without getting bored. On the surface WC3 is a highly polished RTS with excellent artdesign, 4 distinct fun races, and superb campaigns that takes you through alot of Warcraft Lore. Deep within lies an outstanding coredesign and gameplay that works on a pro level and that keeps getting constant updates for years and years. The depth to WC3s races and their gameplay is astounding and this game is truly a marvel to behold from a design standpoint. The attention to the small details and the amount of polish Blizzards puts into everything really shines through in WC3. In retrospective its also kinda fun to go back to Warcraft 3 after playing WoW and realize that the artstyle and graphics are pretty much exacly the same but from a RTS perspective. An important piece to the Warcraft universe, probably THE most important piece, and watching replays of Korean Progamers that plays WC3 for an actual job will never stop to impress no matter how many years that passes. And by the way, looking at the sales for games in Sweden Warcraft 3 and its expansion still sells almost as well as WoW. The interest is STILL burning for this game, and I can totally see why.