A great add-on to a spectacular game
How I played fallout 3 was to complete all the side quest before completing the main quest because the game ends but with this addition, you will not have to worry about the game ending.
Broken Steel is about the brotherhood of steel's last push to eliminate the last remnants of the enclave and as usual, you are enlisted to make this final push. Gameplay is the same as in the original but you have new weapons that are very powerful. The best part of this addon is the extension of the level cap from 20 to 30. Other addons like Operation Anchorage and The Pitt were not in my opinion good enough because they did not extend the level which makes Broken Steel more appealing.
There are centainly interesting side quests that are worth checking out and you could spend over 6 to 8 hours or more with this expansion depending on how you play it.
Another addition are new perks which certainly extends the playability. I believe in order to enjoy this game to the fullest, get the Broken Steel first before the other games so you can level up and enjoy new perks. Other than that, there is nothing really extraordinary except it is still Fallout 3 and that is not a bad thing.
There is nothing new on the graphics front and sound but this is a great game to try out.