kbd here to tell you the good and the bad of Fallout 3 in as few words as possible. ;)
The good:
+ 10 - 20 hours approx. main quest (much MUCH longer for 100% completion)
+ developed rpg mechanics (character creation, interactive npcs, inventory management... etc)
+ good, evil and 'in between' player choices have significant effects
+ good replay value (multiple endings)
+ good sound and art design
+ gory
+ lots of side-quests
+ massive world to explore
+ option to play in 1st and 3rd person
+ simplistic shooter combat underpinned by stylish slo-mo action
+ wicked sense of humour
The bad:
- can be repetitive (combat, grayscale environments... etc)
- disappointing main story
- lots of small glitches (graphical and otherwise)... mostly inconsequential
- some awkward animations
