Once you enter The Capital Wasteland. You will most likely find yourself getting distracted with the vast open world that the game has to offer. While you explore it you will run into some very interesting characters to say the very least. Some of them giving you side quests that will make you completely forget about the task to find your father in the first place. As you explore this wasteland, your welcomed by the lovely inhabitants of the Capital Wasteland. Super Mutants, Raiders and the Demon-looking Deathclaws to name a few. You counter these foes by using a wide range of weapons. Admittedly, the real-time combat is not great. However, you have a fun little game mechanic called V.A.T.S (Vault-Tec Assited Targeting System). This allows time to stop and allows you to target a certain main part of the body. If that be the torso, legs, arms and head. This makes combat more interesting and alot more fun. The amount of shots you can shoot depends on your AP (Action Points), these points will vary depending on how you level up. As you progress through the game. You will have to make a fair share of choices, some of these having a effect on how the game plays out. But mostly it has an effect on your Karma. Doing good deeds will raise it, as bad deeds will decrease it. This has a major effect on how people in the game world interact with you and the play style of the player. This allows you to do multiple playthroughs . If it's Convincing people out of a gun fight, to blowing up an entire city because some guy you met in a bar told you so, you can do it in Fallout 3.
I really can't explain everything without accidentally spoiling the main story bit by bit. However, if you have never played Fallout 3 to this day. I highly recommend picking it up and it is dirt cheap now-a-days.

