What language is "Snake, Snake, Snake" programmed in?

[An Easy Target]

As title asks.

I know that more than one higher-level-language can be used to program the classic "Snake" game, or a copy/replica of it. I would like to know specifically which language was used to code "Snake Snake Snake!".

I'd also be interested to know if an IDE or other programming program was used to created this particular take on Snake.