Which is better? (Better in this case probably means "more [witty] witty quotes.)
Both have their pros and cons. The Hitchhiker's Guide is not really kid friendly ("So Long and Thanks For All the Fish" definitely isn't PG-13), but while Portal 2 does have a few bits that wouldn't make it onto PBS Kids, it doesn't get worse than GLaDOS's "What the hell is going on?" or Cave Johnson's "I don't need your damn lemons!"
However, The Hitchhiker's Guide is not only longer, but has a lot more in the series. Writing out all the dialogue in Portal almost certainly wouldn't fill up 10 pages, let alone several hundred. Portal 2 is a lot longer, but you still couldn't get a hundred pages out of it unless you tried to make a novelization of the entire gameplay. And you can imagine what that would be like, since Chell, Atlas, and P-body never talk.
Both revolve at least partially around a controversial corporation (Aperture Science was founded to create shower curtains for the US Navy and ended up making portal devices when the CEO got mercury poisoning from 6 curtains meant to be specially fitted for US Senators. The Hitchhiker's Guide was founded on the premises of truth and honesty and promptly went bankrupt. It then was re-founded on the premises of truth and honesty and where you can stuff them both, and that lunch is the center of the spiritual life, after the CEO spent several years in darkened rooms in illegal states of mind and spent time with a group of monks.) and impossible technology (the Infinite Warp Drive, the Sub-Etha Signaling Device, the Aperture Science Handheld Portal Device, the Excursion Funnel, and my personal favorite, the Aperture Science Thing That We Don't Know What It Does), and sometimes you can try to make connections between the main characters (Arthur Dent and Wheatley, perhaps?).
So which do you think is the better piece of fiction?
Both have their pros and cons. The Hitchhiker's Guide is not really kid friendly ("So Long and Thanks For All the Fish" definitely isn't PG-13), but while Portal 2 does have a few bits that wouldn't make it onto PBS Kids, it doesn't get worse than GLaDOS's "What the hell is going on?" or Cave Johnson's "I don't need your damn lemons!"
However, The Hitchhiker's Guide is not only longer, but has a lot more in the series. Writing out all the dialogue in Portal almost certainly wouldn't fill up 10 pages, let alone several hundred. Portal 2 is a lot longer, but you still couldn't get a hundred pages out of it unless you tried to make a novelization of the entire gameplay. And you can imagine what that would be like, since Chell, Atlas, and P-body never talk.
Both revolve at least partially around a controversial corporation (Aperture Science was founded to create shower curtains for the US Navy and ended up making portal devices when the CEO got mercury poisoning from 6 curtains meant to be specially fitted for US Senators. The Hitchhiker's Guide was founded on the premises of truth and honesty and promptly went bankrupt. It then was re-founded on the premises of truth and honesty and where you can stuff them both, and that lunch is the center of the spiritual life, after the CEO spent several years in darkened rooms in illegal states of mind and spent time with a group of monks.) and impossible technology (the Infinite Warp Drive, the Sub-Etha Signaling Device, the Aperture Science Handheld Portal Device, the Excursion Funnel, and my personal favorite, the Aperture Science Thing That We Don't Know What It Does), and sometimes you can try to make connections between the main characters (Arthur Dent and Wheatley, perhaps?).
So which do you think is the better piece of fiction?