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Why is my game using エナジー for "energy" instead of エネルギー?

[![enter image description
here](https://i.stack.imgur.com/88Kik.jpg)](https://i.stack.imgur.com/88Kik.jpg)
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2017-09-11T00:56:06.780
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question
translation word-choice nuances katakana
Non-standard katakana (エナジー vs. エネルギー)
I tried to look it up in dictionaries, and エナジー is listed both in the Daijirin
and the Kenkyusha dictionary as an alternative to エネルギー. It just seems an
alternative way to transcribe the English word "energy".
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2017-09-11T01:17:03.747
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Basically what I know エナジー & エネルギー both are gairaigo words & interchangeable
(shown up as alternative of each other in dictionary), but they have different
origins.

1) エナジー originated from English term _"energy"_ , commonly used to refer both
"mental powers", "spiritual powers" & "physical powers" (broader meaning).

2) エネルギー originated from German term _"Energie"_ , specifically means
"physical powers" as at the time of its invention, "power" associated to
scientific physical activity.

There is another explanation from [Japanese loanwords
history](http://ysjapanese.wp-x.jp/2015/11/a-quick-history-of-japanese-
loanwords-gairaigo/):

> エネルギー is one of the German based loanwords that were imported into Japanese
> as part of the modernization effort. At that time, German had more presence
> in science than today.
>
> エナジー was imported from English. I think it's a relatively new katakana word,
> like a few decades old. As such, it feels newer and therefore cooler than
> エネルギー.

So, in your case, if the word refers to mental or spiritual powers, "エナジー" is
more preferred term. For usage in science (related with physics phenomena),
"エネルギー" is more commonly used (you can see in this [Japanese Wikipedia of
'energy'](https://ja.wikipedia.org/wiki/%E3%82%A8%E3%83%8D%E3%83%AB%E3%82%AE%E3%83%BC)).

References:

[energyという単語はエナジーとエネルギー。](https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1256291307;_ylt=A2RishttToJWa3MAZ5Uo_PN7?pos=1&ccode=ofv)

[エネルギーとエナジーの違いを教えてください。](https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1311311658;_ylt=A2RirhtIToJWoi4AK11wAPR7?pos=1&ccode=ofv)
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2017-09-11T01:28:17.567
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It's just simple.

We Japanese usually use 'エネルギー', because it is 'traditional' gairaigo. 'エナジー'
is not a daily word for most Japanese people.

In novels/games/movies and so on, we sometimes use 'エナジー' for extraordinary
feelings.
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2017-09-11T23:53:26.000
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To me エネルギー sounds like energy in the scientific meaning (kWh), whereas エナジー
more like energy in "being energetic", so I would use 再生可能エネルギー (renewable
energy), but エナジードリンク (energy drink).
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2019-07-15T01:05:32.047
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