-Fun combat mechanic.
Freedom to move your mouse with sensativity change. You can cast spells similar to: electric, illusionary, bugs, ect! It feels like it actually takes some thinking, and strategic fighting to win.
Even though the graphics are lesser than some games, they are certainly not disatisfying, and the city does have a hint of creepiness to it on top of the action.
-Fun skill tree. Unlock different abilities, and you can even swap them out for others.
This addition allows you to dictate YOUR battles, and that is the way I love to fight.
-The fighting gets old
Now the fighting does varry, but you will find yourself fighting mostly 5-8 types of enemies throughout the entire game which you can break down into three styles. Melee, guns, and bomb throwers, and that's it. Don't be discouraged though, the obsticals do change, as well as the scenery, and you will wonder what will be in the next room. It is fun to explore.
There are interesting twists to the story that you do not expect at first, however when approaching the twist, you are able to guess what will happen based on what you have gone through before it comes, giving the story a bitter-sweet taste to some degree.
Bioshock may have it's weaknesses like any other game, but what some may fail to see is that where IT IS strong, it is well done, and that is what makes it fun.