A year ago, if you had told me that Vyxal would become a popular language on code golf, I would have said "That's impossible, it's too difficult to parse."
But, here we are.
In fact, Vyxal is now the 11th most popular language on golfscript.
In addition to having a parser that is hard to write, Vyxal has a very unique kind of syntax.
There are no parentheses, operators, or keywords.
Only a single token that is repeated, creating a list of lists.
The token is the letter V.
For example:
[VVVVVVVVVVVVVVVVVVVVVVVVVV]