Recs.
Updated
SpecsUpdate
Pros
Pro The strategy for individual campaigns really forces you to think through available strengths and weaknesses, especially given the hex-based terrain
Pro Single-player and multi-player
Battle it out against the game's advanced bots or go the online/hotseat route. Hotseat is a mode in which multiple players can play on the same computer by taking turns.
Cons
Con Dice rolling-type battle mechanics
If you can get over the fact that there is a probability to lose a battle even if you have better units than your enemy, then you'll have fun, otherwise you'll find yourself save scumming. There's no other real con, if you play the singleplayer beginners recommended campaigns you'll learn all the mechanics, without having to read a lot. There's a lot of singleplayer campaigns available to download, other than the original ones, as well full of their unique stories and secrets.
Con Doesn't explain game mechanics well
It should have more information on its battle mechanic, job change when leveling up, and traits/skills.