My Search query to IGDB API is failing with status code 400 if the search text contains a back slash \ in it:
I am using below syntax:
const { q } = req.query
let fields = name, collection
apicalypse(requestOptions)
.fields(fields)
.limit(50)
.search(q)
.request('/games')
.then(response => returnResponse(response, req, res))
.catch(err => returnError(err, req, res))

requestOptions are like this:
const apiPath = 'https://api-v3.igdb.com'
const defaultHeaders = {
'Accept': "application/json",
"user-key": apiKey
}
// Apicalypse Request Options
const requestOptions = {
queryMethod: 'body',
method: 'post', // The default is get
baseURL: apiPath,
headers: defaultHeaders,
responseType: 'json',
timeout: 10000
}
q is \ if I send \ from front-end & abc \ xyz in case of abc \ xyz.

Some of the games don't get results through the API because the names used by ROM (and other game images) documenting organizations have some rules that don't apply to IGDB's main title rule.

Some of them:

If the title starts with an article, it goes to the end of the title. (Legend of Zelda, The)
If there is a non-standard character, like slashes, quotes, etc, they are removed.
The Japanese naming scheme uses double vowels instead of singles ones.

It would be good to have as an alternative title option something like: "Alternative title - No-Intro Naming Convention".

I'm pretty sure it is good both as a catalog stand point and also useful for third party applications that work with ROMs (TOSEC, No-Intro and Redump follow similar rules).

Just as a remark, these organizations are of people who document the information about games, but don't endorse piracy, as many think. They share DATs, a specialized database file, which contains only information about the games.

The current popularity value for a game doesn't make any sense.
Please see below examples showing the popularity value with the hypes, and number of user ratings.

"id": 115278,
"hypes": 1,
"name": "Rune Factory 4 Special",
"popularity": 2090.622837928576

"id": 120268,
"name": "Zombie Driver: Immortal Edition",
"popularity": 1431.973719413489

As you can see, the top 2 games by popularity both have 0 user ratings. How can these be the most popular games on IGDB?

The docs say 'The popularity number is calculated using usage statistics of game pages at https://www.igdb.com' which can't possibly be true if these games are at the top.