Whoa...google translate got me thinking:

[Mikessc88]

Google translate also tends to use popular and trending stuff when it comes to those words. Maybe it's just because of how popular Phantasy Star is.

I just looked it up and phantasy is an obsolete spelling of fantasy.

If this is true it would make the most sense. I hadnt thought about it recognizing popular names.

[Syklo]

Google translate also tends to use popular and trending stuff when it comes to those words. Maybe it's just because of how popular Phantasy Star is.

I just looked it up and phantasy is an obsolete spelling of fantasy.

Out of curiosity: ファイナルファンタジー and ファンタシースター.

I've isolated the actual word "ファンタシー" incase that wasn't clear in the OP.
Also, note the difference in what you wrote there:
ファイナルファンタジー = Final Fantasy
ファンタシースター = Phantasy Star
ファンタジー; Fantasy
ファンタシー; Phantasy.
???????

[blace]

Could it be that someone over at Google is a Phantasy Star fan and hidden away some coding to translate it as such?Just bored out of my mind and it's a possibility.

[Zyrusticae]

I'm guessing it's because ファンタジー is the commonly accepted spelling of "fantasy" while ファンタシー　is not used for anything outside of the Phantasy Star series.

Or something like that.

[Shadowth117]

I've isolated the actual word "ファンタシー" incase that wasn't clear in the OP.
Also, note the difference in what you wrote there:
ファイナルファンタジー = Final Fantasy
ファンタシースター = Phantasy Star
ファンタジー; Fantasy
ファンタシー; Phantasy.
???????

Still pretty much the same thing. The only difference you're seeing there is the the ji symbol being used instead of the shi symbol which is pretty much as close as they get to having a zi normally. Its really not as huge as you think...

[Syklo]

Still pretty much the same thing. The only difference you're seeing there is the the ji symbol being used instead of the shi symbol which is pretty much as close as they get to having a zi normally. Its really not as huge as you think...

It makes me curious how that particular character difference results in a variance in spelling of the first fricative ('f'/'ph')
Let alone, on google translate.

What blace said is the first thing I thought.

[riku2replica]

Borrowed words is always a mystery.

[connor_the_kid]

I'm guessing it's because ファンタジー is the commonly accepted spelling of "fantasy" while ファンタシー　is not used for anything outside of the Phantasy Star series.

Or something like that.

why would using shi over zi at the end affect the spelling with "ph" over "f"?

@OP it has nothing to do with the japanese spelling. They probably just thought it looked more unique. which it does.

the end.

and no phantasy star is not the first to spell it as phantasy.

[kkow]

wasei eigo ┐(´ー｀)┌　

ive seen both used, although not sure how google translate does things.

[Chik'Tikka]

I've isolated the actual word "ファンタシー" incase that wasn't clear in the OP.
Also, note the difference in what you wrote there:
ファイナルファンタジー = Final Fantasy
ファンタシースター = Phantasy Star
ファンタジー; Fantasy
ファンタシー; Phantasy.
???????

ファンタ シ ー
ファンタ ジ ー

am i the only one to see the Tsu in one and the Zu in the other? +^_^+
Also thread on Google Translate??? am i tht drunk? I've been drinking all day, don't be 馬鹿人　on me now+^_^+ (yeah i know that's mispelled, but you know what i mean)