Pretty Good.
The gameplay is very good as it offers two styles: Manual attack and auto attack. Manual means you have to select an enemy and continually press the hotkey for the skill or attack, which is great for spammers, and auto attack means that if you press the hotkey once you will continually use that attack. Of course if it is a skill, when you run out of mana you will start attacking normally. This is good for watching your health.
However, Cabal doesn't give you much choice in character customization, unlike games such as EVE online, and so your character just blends in with the rest of the crowd.
Overall, Cabal is a good game, and if you liked WOW or MMORPGs, you should definitely try this.