Sands of the Coliseum.

I usually play a lot of flash games, and mainly on Kongregate. This one is awesome. It's simple yet addictive, it's not very balanced, but you could easily lose a couple hours playing it. It's a turn-based rpg with blood. You upgrade your gladiators via items, spells/talents and stats. It really could be a good game, even a full release game with graphics and such, you should check it out.

The combat system is a little unusual, but I like it, instead of taking health points from the given character you take health points from a given limb of his. For example I could attack only his leg and cut it out eventually, yes it's little gory.

But, that's why I like it. You should try it too:
A link to the game!