Something new. Once you get the hang of it, you'll be hooked.
It takes your average dungeon crawler and gives it an entirely new experience.
You start off with 6 Races, 4 Basic Classes, and the 1 Normal Dungeon.
As you continue to complete the normal dungeon with each of the classes
you unlock more classes/races/dungeons. Everyone loves unlocking new stuff.
You'll have tons of new things to accomplish with every dungeon you start.
Leveling your character, collecting equipment, taking advantage of the class/race specific skills,and taking down the big bad boss, this game just does it right. Each dungeon takes about 10-15 minutes so you'll even be able to play if you're running low on time.
The difficulty level will definitely have you thinking a few moves ahead if you've never played any "roguelike" games before. But once you get the hang of it, you'll love it. I was definitely not the best when I first started playing it. But after a little work, I've unlocked just about everything and I'm able to enjoy it even more.
This game is definitely worth a try, especially because it's free.