If you've never heard of the heroes of might and magic, and you enjoy turn based strategy/city building games, please check it out. There's a handful of titles under the franchise, but it really reached its pinnacle at the third installment. Its a bit old, and the graphics aren't anything special (although soundtrack is awesome), so it doesn't require a high performance computer. It's $15 on steam, or $10 for the base game + expansions on GOG. I have it on steam, but plan on buying the GOG version in a couple of weeks.
SUUUPER FUN!
One of my favourite games of all time
Really just an awesome game all-around
Had to turn it on and get a screenshot just for fun :)
http://i.imgur.com/qvyLcmG.png (http://i.imgur.com/qvyLcmG.png)
Likewise, Tslat. There's no two games I played more in elementary and junior high school than heroes 1 & 2. The third one is just the best.