Easily dismissed as a typical Bethesda retro-futuristic post-apocalyptic Skyrim, Fallout 3 is... well, more or less that, really O.o"
It continues the Fallout storyline, 36 years after FO2, this time telling the story of an unrelated Lone Wanderer from Vault 101, who sets out to find his/her father. Off to the world you go. It is a large, open world with a ton of quests, exploration being one of the main aspects of this title. FO2 players may recognize some characters and events mentioned here too. All characters are voiced too, improving immersion.
FO3 still uses S.P.E.C.I.A.L. system but traits and perks were merged, reduced in number and granted every level. I for one am divided here: while I hate this Bethesda oversimplification of mechanics to the point a hamster could master it, FO1 and FO2 had too many useless skills and was severely unbalanced. FO3 upgraded(?) from isometric to first/third person, allowing for a cool hybrid TBS/real-time combat. The karma system encourages proper role-playing as well.
I've heard a lot of critique that "FO3 doesn't feel like a real FO" and complaints about the depth of the story. Chill, daddy, FO3 is an entertaining game. My only complaint is that this is a Bethesda game. C'mon, how many decades it will take for these guys to implement a minimally decent items menu?!?! Also, PLEASE, SKIPPEABLE DEATHBLOW SCENES, it is not interesting enough to be watched 400x per gameplay, thank you very much.
It worked perfectly on Linux via Proton (thanks Valve!). No achievements. If FO3 would be a potato, it would be a good potato.