@DarcsDOSBox + Fallout 2 = I'm sorry I can't hear you over the awesomeness of my Nexus 7's (or LG G2's, or, well, any Android's) versatility.
Not to mention it's not a walled garden.
What do you even mean by "actually have a user interface" anyway?
And I'm not even one of the super techy programmer types so it's not like it's something that requires mastery over all things silicon.
GOSH SOME PEOPLE