fallout 3 help

[OpenToSuggestions]

I was really enjoying fallout until I finished the main quest and the credits rolled and it took me back to the title screen so I cannot carry on! wtf oblivion let you carry on after the main quest was done, I am only 15 hours into the game!

At the start this game seemed brilliant and now I feel let down compared to how good oblivion was.

I have barely explored the upper half of the map. Are there any factions I can join like I could on oblivion? (Like fighters guild, dark brotherhood etc).

So where should I head? I will load an earlier save and won't bother with the main quest. I am only level 16 too...

 

[OpenToSuggestions]

Thanks for the reply

Theres going to be 3 expansion packs in total, The 3rd one which is out March/April will let you continue past the end of the game, like Oblivion!

Theres so much to do in this game, just dont do the main quests!

The way you said that suggests 2 expansions are out already?

Where can I go for loads of quests? I have done rivet city, megaton and the main quests and that is pretty much it!
Also can you improve skills and stuff when the level 20 cap is reached?

 

[OpenToSuggestions]

45 hours in and I've got about half a dozen missions on the go!

Care to mention where 1 or 2 of them start?