Random Events

Random events can happen anywhere (the map in your Fallout 3 case helps A LOT) on the purple stars on your Fallout 3 map. They can consist of many different things, such as a wounded deathclaw or roving traders. Please note that you can save and re-load to get as many as you want.

Be warned though,you should come fully prepared for a battle beacause not all of these encounters are friendly ones.

Here is a list of some encounters:

Merchants

if you let big town die,a salvager will be there looting

if you let the people of big town live you see a merchant going to sell in big town

a merchant that came from oasis is dying and on his body you find the location of oasis

Hostiles

if you disarmed megatons bomb mr. burke sent assasins after you.

if you destroyed megaton a group of settlers ambush you

if you got the declaration of independance and killed sydney,a relic hunter is put out by your bragging

if you forced amata to leave an enclave soldier is asking her where the vault is,then he kills her

have fun exploring!