Im not into strategy games, but this one took over my heart :)

User Rating: 9.6 | WarCraft III: Reign of Chaos PC
Fantastic game with lots of characters and different rases to chose from. It looks like it was made for RPG fans as well, cause there's a big storyline behind it and a lot of missions with just having a team by your side, where your hero has to make his way through various disasters and abominations and you have to use your skills you obtain in the best way possible to win it.
Heroes receive experience points by defeating foes, so their power and abilities grow with each level. Tons of magic spells and units for a disposal, powerful artifacts to choose from side-quests and mercenaries to recruit. There's a possibility to have few heroes by your side to aid each other in times of peril.
You'll like it if you play it.